Mars Duo 78.8 g: version 1
Saved 2026-09-25 19:18 by @benjaminsen (bot): Added Mars Duo 78.8 g (5000159470490), a barcode family/mars-bar names without a page. Identity from the Open Food Facts record and two OFF photos (front 2021: 39.4 g per bar, 742 kJ/177 kcal, 1882 kJ/448 kcal per 100 g; side panel 2017: Mars Chocolate UK Ltd, Slough and importer Mars Chocolat France, Haguenau). Full UK data sheet (panel per 100 g and per bar, ingredients, allergens, claims, origin UK, RRP GBP 1.50) from Dee Bee Wholesale; the OFF/USDA typed ingredient list and panel kept as a separate, unconfirmed observation because the lists differ (disputed gap). Markets: GB (pack, Devo GBP 1.45 in stock 2026-09-25, Dee Bee, Amazon.co.uk B01ET7KD1K without price) and FR (printed importer line; Amazon.fr only has 3- and 6-bar lots, recorded as a gap). gs1_prefix_owner follows the company stub (GS1 GDSN list). Status left unset: Dee Bee marks the EAN No Longer Available but no maker source says it was withdrawn.. Current is v2.
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| 1 | 1 | # Mars Duo 78.8 g <!--product--> | |
| 2 | 2 | ||
| 3 | 3 | ## Identity <!--identity--> | |
| 4 | 4 | gtin: 05000159470490 | |
| 5 | 5 | name: Mars Duo 78.8 g | |
| 6 | 6 | family: family/mars-bar | |
| 7 | 7 | default_observation: deebee-sheet | |
| 8 | 8 | summary: Two-bar Mars pack of 2 x 39.4 g made by Mars in the United Kingdom, with a French importer line on the wrapper. | |
| 9 | 9 | brand: brand/mars | |
| 10 | 10 | category: category/10000045 | |
| 11 | 11 | net_content: 78.8 g | |
| 12 | 12 | country_of_sale: GB, FR | |
| 13 | 13 | country_of_origin: GB | |
| 14 | 14 | piece_count: 2 | |
| 15 | 15 | pack_format: two-bar wrapper | |
| 16 | 16 | last_seen: 2026-09-25 | |
| 17 | 17 | last_seen_note: In stock at GBP 1.45 at a Premier convenience store in West Norwood, London, on Devo. | |
| 18 | 18 | <!--/identity--> | |
| 19 | 19 | ||
| 20 | 20 | ## Relations <!--relations--> | |
| 21 | 21 | | role | target | market | from | until | ended | status | source | note | | |
| 22 | 22 | | ------------------- | ----------------------------------------- | ------ | ---- | ----- | ----- | ------- | --------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | |
| 23 | 23 | | brand_owner_at_sale | company/mars-wrigley-confectionery-uk | GB | | | | printed | ^off-side | The wrapper prints "Mars Chocolate UK Ltd, Slough, SL1 4JX", the former name of Mars Wrigley Confectionery UK Limited. | | |
| 24 | 24 | | manufactured_by | company/mars-wrigley-confectionery-uk | | | | | sourced | ^deebee | Dee Bee Wholesale names the manufacturer as Mars Wrigley Confect UK and the country of origin as United Kingdom. | | |
| 25 | 25 | | imported_by | company/mars-wrigley-confectionery-france | FR | | | | printed | ^off-side | Printed beside an F flag: "IMP: Mars Chocolat France, 3 Chemin de la Sandlach, CS 10036 - 67 501 Haguenau Cedex"; Mars Chocolat France is the former name of Mars Wrigley Confectionery France. | | |
| 26 | 26 | | gs1_prefix_owner | company/mars-wrigley-confectionery-france | | | | | sourced | ^gs1-gdsn | Prefix 5000159; GS1's GDSN trading-partner list gives GLN 5000159000000 to MARS CHOCOLAT FRANCE, as the company page states. | | |
| 27 | 27 | <!--/relations--> | |
| 28 | 28 | ||
| 29 | 29 | ## Markets <!--markets--> | |
| 30 | 30 | | country | status | source | note | observed | condition | origin | price | | |
| 31 | 31 | | ------- | ------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- | --------- | ------ | -------- | | |
| 32 | 32 | | GB | printed | ^off-side | UK operator block "Mars Chocolate UK Ltd, Slough, SL1 4JX" printed on the wrapper. | 2017-04-23 | | | | | |
| 33 | 33 | | GB | sourced | ^devo | Premier - Harts, 116 Norwood High Street, London SE27: Mars Duo 78g, in stock; the listing URL carries this barcode. | 2026-09-25 | new | | GBP 1.45 | | |
| 34 | 34 | | GB | sourced | ^deebee | Dee Bee Wholesale lists EAN 5000159470490 in cases of 32 at an RRP of GBP 1.50, added 7 January 2014; the wholesaler now marks it No Longer Available. | 2026-09-25 | | GB | GBP 1.50 | | |
| 35 | 35 | | GB | derived | ^amazon-uk | Amazon.co.uk ASIN B01ET7KD1K, Mars Duo 78.8 g, pack of 1, under Grocery > Food Cupboard > Snacks & Sweets > Chocolate Candy; manufacturer Mars Wrigley Confectionery UK; no barcode printed on the page, and it showed no price because the item could not be dispatched to the delivery location of the reading. | 2026-09-25 | new | | | | |
| 36 | 36 | | FR | printed | ^off-side | French importer line (IMP, F flag) for Mars Chocolat France at Haguenau above a French ingredient statement. | 2017-04-23 | | | | | |
| 37 | 37 | <!--/markets--> | |
| 38 | 38 | ||
| 39 | 39 | ## Aliases <!--aliases--> | |
| 40 | 40 | | name | type | locale | from | until | | |
| 41 | 41 | | ---------------------------------------------------------------- | ------ | ------ | ---- | ----- | | |
| 42 | 42 | | Mars Duo | search | en | | | | |
| 43 | 43 | | Mars Duo Chocolate Bar 78.8g | search | en | | | | |
| 44 | 44 | | Mars Caramel Nougat & Milk Chocolate Snack Bar Duo 78.8g | search | en | | | | |
| 45 | 45 | | Mars duo, milk chocolate with soft nougat and caramel centre bar | search | en | | | | |
| 46 | 46 | <!--/aliases--> | |
| 47 | 47 | ||
| 48 | 48 | ## Ingredients <!--ingredients--> | |
| 49 | 49 | | ingredient | role | kind | note | percent | basis | market | from | until | source | id | observation | parent_id | position | printed_name | state | | |
| 50 | 50 | | ------------------------------ | ---------- | ----- | ----------------------------------- | ------- | ----- | ------ | ---- | ----- | ------- | --- | ------------ | --------- | -------- | -------------------------- | ----- | | |
| 51 | 51 | | ingredient/sugar | | label | | | | | | | ^deebee | d1 | deebee-sheet | | 1 | Sugar | known | | |
| 52 | 52 | | ingredient/glucose-syrup | | label | | | | | | | ^deebee | d2 | deebee-sheet | | 2 | Glucose Syrup | known | | |
| 53 | 53 | | ingredient/skimmed-milk-powder | | label | | | | | | | ^deebee | d3 | deebee-sheet | | 3 | Skimmed Milk Powder | known | | |
| 54 | 54 | | ingredient/cocoa-butter | | label | | | | | | | ^deebee | d4 | deebee-sheet | | 4 | Cocoa Butter | known | | |
| 55 | 55 | | ingredient/cocoa-mass | | label | | | | | | | ^deebee | d5 | deebee-sheet | | 5 | Cocoa Mass | known | | |
| 56 | 56 | | ingredient/sunflower-oil | | label | | | | | | | ^deebee | d6 | deebee-sheet | | 6 | Sunflower Oil | known | | |
| 57 | 57 | | ingredient/butterfat | | label | | | | | | | ^deebee | d7 | deebee-sheet | | 7 | Milk Fat | known | | |
| 58 | 58 | | ingredient/palm-fat | | label | | | | | | | ^deebee | d8 | deebee-sheet | | 8 | Palm Fat | known | | |
| 59 | 59 | | ingredient/lactose | | label | | | | | | | ^deebee | d9 | deebee-sheet | | 9 | Lactose | known | | |
| 60 | 60 | | ingredient/whey-permeate | | label | | | | | | | ^deebee | d10 | deebee-sheet | | 10 | Whey Permeate (from Milk) | known | | |
| 61 | 61 | | ingredient/fat-reduced-cocoa | | label | | | | | | | ^deebee | d11 | deebee-sheet | | 11 | Fat Reduced Cocoa | known | | |
| 62 | 62 | | ingredient/barley-malt-extract | | label | | | | | | | ^deebee | d12 | deebee-sheet | | 12 | Barley Malt Extract | known | | |
| 63 | 63 | | ingredient/soy-lecithin | emulsifier | label | | | | | | | ^deebee | d13 | deebee-sheet | | 13 | Emulsifier (Soya Lecithin) | known | | |
| 64 | 64 | | ingredient/salt | | label | | | | | | | ^deebee | d14 | deebee-sheet | | 14 | Salt | known | | |
| 65 | 65 | | ingredient/egg-white-powder | | label | | | | | | | ^deebee | d15 | deebee-sheet | | 15 | Egg White Powder | known | | |
| 66 | 66 | | ingredient/vanilla-extract | | label | | | | | | | ^deebee | d16 | deebee-sheet | | 16 | Vanilla Extract | known | | |
| 67 | 67 | | ingredient/sugar | | label | | | | | | | ^off | o1 | off-typed | | 1 | Sugar | known | | |
| 68 | 68 | | ingredient/glucose-syrup | | label | | | | | | | ^off | o2 | off-typed | | 2 | glucose syrup | known | | |
| 69 | 69 | | ingredient/skimmed-milk-powder | | label | | | | | | | ^off | o3 | off-typed | | 3 | skimmed milk powder | known | | |
| 70 | 70 | | ingredient/cocoa-butter | | label | | | | | | | ^off | o4 | off-typed | | 4 | cocoa butter | known | | |
| 71 | 71 | | ingredient/cocoa-mass | | label | | | | | | | ^off | o5 | off-typed | | 5 | cocoa mass | known | | |
| 72 | 72 | | ingredient/sunflower-oil | | label | | | | | | | ^off | o6 | off-typed | | 6 | sunflower oil | known | | |
| 73 | 73 | | ingredient/butterfat | | label | | | | | | | ^off | o7 | off-typed | | 7 | milk fat | known | | |
| 74 | 74 | | ingredient/lactose | | label | | | | | | | ^off | o8 | off-typed | | 8 | lactose | known | | |
| 75 | 75 | | ingredient/whey-powder | | label | | | | | | | ^off | o9 | off-typed | | 9 | whey powder (from milk) | known | | |
| 76 | 76 | | ingredient/palm-fat | | label | | | | | | | ^off | o10 | off-typed | | 10 | palm fat | known | | |
| 77 | 77 | | ingredient/fat-reduced-cocoa | | label | | | | | | | ^off | o11 | off-typed | | 11 | fat reduced cocoa | known | | |
| 78 | 78 | | ingredient/barley-malt-extract | | label | | | | | | | ^off | o12 | off-typed | | 12 | barley malt extract | known | | |
| 79 | 79 | | ingredient/soy-lecithin | emulsifier | label | | | | | | | ^off | o13 | off-typed | | 13 | emulsifier (soya lecithin) | known | | |
| 80 | 80 | | ingredient/salt | | label | | | | | | | ^off | o14 | off-typed | | 14 | salt | known | | |
| 81 | 81 | | ingredient/egg-white-powder | | label | | | | | | | ^off | o15 | off-typed | | 15 | egg white powder | known | | |
| 82 | 82 | | ingredient/milk-protein | | label | Printed as hydrolysed milk protein. | | | | | | ^off | o16 | off-typed | | 16 | hydrolysed milk protein | known | | |
| 83 | 83 | | ingredient/vanilla-extract | | label | | | | | | | ^off | o17 | off-typed | | 17 | natural vanilla extract | known | | |
| 84 | 84 | <!--/ingredients--> | |
| 85 | 85 | ||
| 86 | 86 | ## Observations <!--observations--> | |
| 87 | 87 | | id | label | kind | market | language | valid_from | valid_until | observed | status | ingredients_text | ingredients_declaration | ingredients_exempt_basis | source | note | net_content | pack_quantity | piece_count | pack_format | model_number | | |
| 88 | 88 | | ------------ | ----------------------------------------- | ----- | ------ | -------- | ---------- | ----------- | ---------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------- | ------------------------ | ---------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | ------------- | ----------- | --------------- | ------------ | | |
| 89 | 89 | | deebee-sheet | UK product data sheet (Dee Bee Wholesale) | label | GB | en | | | 2026-09-25 | supported | Sugar, Glucose Syrup, Skimmed Milk Powder, Cocoa Butter, Cocoa Mass, Sunflower Oil, Milk Fat, Palm Fat, Lactose, Whey Permeate (from Milk), Fat Reduced Cocoa, Barley Malt Extract, Emulsifier (Soya Lecithin), Salt, Egg White Powder, Vanilla Extract, Milk Chocolate contains Milk Solids 14% minimum, Milk Chocolate contains Vegetable Fats in addition to Cocoa Butter | listed | | ^deebee | Standardised name "Milk chocolate with soft nougat (32%) and caramel centre (27%)"; portion 39.4 g, 2 portions per pack; country of origin United Kingdom. | 78.8 g | | 2 | two-bar wrapper | | | |
| 90 | 90 | | off-typed | Open Food Facts typed English record | label | | en | | | 2026-03-18 | unconfirmed | Sugar, glucose syrup, skimmed milk powder, cocoa butter, cocoa mass, sunflower oil, milk fat, lactose, whey powder (from milk), palm fat, fat reduced cocoa, barley malt extract, emulsifier (soya lecithin), salt, egg white powder, hydrolysed milk protein, natural vanilla extract. | listed | | ^off | Typed by contributors, last edited 2026-03-18; the USDA Branded Foods record fdc 511386 (modified 2017-10-17) carries the same list and the same energy, fat, protein and carbohydrate figures, so the two are one line of evidence. | | | | | | | |
| 91 | 91 | | front-2021 | Front of the wrapper, photo 2021 | label | | en | | | 2021-05-30 | supported | | | | ^off-front | Front photo (imgid 2): "= 39.4g", a per-bar energy badge and "100g: 1882 kJ / 448 kcal". | | | | two-bar wrapper | | | |
| 92 | 92 | | fr-side-2017 | Side panel with French text, photo 2017 | label | FR | fr | | | 2017-04-23 | supported | | | | ^off-side | Side panel (imgid 1) with the UK operator and French importer lines and the French denomination "Chocolat au lait fourré de confiserie (32%) et caramel (27%)"; the ingredient statement is torn in the photo and only partly legible. | | | | two-bar wrapper | | | |
| 93 | 93 | <!--/observations--> | |
| 94 | 94 | ||
| 95 | 95 | ## Nutrition panels <!--nutrition_panels--> | |
| 96 | 96 | | id | observation | label | basis | basis_state | basis_note | declaration | exempt_basis | source | note | | |
| 97 | 97 | | --------- | ------------ | -------------------- | ------ | ----------- | ---------- | ----------- | ------------ | ---------- | ----------------------------------------------------------------------------------------------------------------------- | | |
| 98 | 98 | | dee-100 | deebee-sheet | Per 100 g | 100 g | as_sold | | transcribed | | ^deebee | | | |
| 99 | 99 | | dee-bar | deebee-sheet | Per 39.4 g bar | 39.4 g | as_sold | | transcribed | | ^deebee | % reference intakes of an average adult (8400 kJ/2000 kcal) as the sheet prints them. | | |
| 100 | 100 | | front-bar | front-2021 | Front badge per bar | 39.4 g | as_sold | | transcribed | | ^off-front | | | |
| 101 | 101 | | front-100 | front-2021 | Front line per 100 g | 100 g | as_sold | | transcribed | | ^off-front | | | |
| 102 | 102 | | off-100 | off-typed | Per 100 g (typed) | 100 g | as_sold | | secondary | | ^off | Contributor-typed values; the USDA record prints 450 kcal, 16.9 g fat, 69.3 g carbohydrate and 4.3 g protein per 100 g. | | |
| 103 | 103 | <!--/nutrition_panels--> | |
| 104 | 104 | ||
| 105 | 105 | ## Nutrition values <!--nutrition_values--> | |
| 106 | 106 | | panel | nutrient | value | qualifier | value_max | dv_percent | printed_value | state | method | source | note | | |
| 107 | 107 | | --------- | --------------- | ----- | --------- | --------- | ---------- | ------------- | ----- | ------- | ---------- | -------------------------------------------------------------------------------------- | | |
| 108 | 108 | | dee-100 | energy_kj | 1883 | | | | 1883kJ | known | printed | ^deebee | | | |
| 109 | 109 | | dee-100 | energy_kcal | 448 | | | | 448kcal | known | printed | ^deebee | | | |
| 110 | 110 | | dee-100 | fat_g | 17 | | | | 17g | known | printed | ^deebee | | | |
| 111 | 111 | | dee-100 | saturated_fat_g | 8.1 | | | | 8.1g | known | printed | ^deebee | | | |
| 112 | 112 | | dee-100 | carbohydrate_g | 69 | | | | 69g | known | printed | ^deebee | | | |
| 113 | 113 | | dee-100 | sugars_g | 60 | | | | 60g | known | printed | ^deebee | | | |
| 114 | 114 | | dee-100 | protein_g | 4.5 | | | | 4.5g | known | printed | ^deebee | | | |
| 115 | 115 | | dee-100 | salt_g | 0.4 | | | | 0.40g | known | printed | ^deebee | | | |
| 116 | 116 | | dee-bar | energy_kj | 742 | | | 9 | 742kJ (9%) | known | printed | ^deebee | | | |
| 117 | 117 | | dee-bar | energy_kcal | 177 | | | 9 | 177kcal (9%) | known | printed | ^deebee | | | |
| 118 | 118 | | dee-bar | fat_g | 6.6 | | | 9 | 6.6g (9%) | known | printed | ^deebee | | | |
| 119 | 119 | | dee-bar | saturated_fat_g | 3.2 | | | 16 | 3.2g (16%) | known | printed | ^deebee | | | |
| 120 | 120 | | dee-bar | carbohydrate_g | 27 | | | 10 | 27g (10%) | known | printed | ^deebee | | | |
| 121 | 121 | | dee-bar | sugars_g | 24 | | | 27 | 24g (27%) | known | printed | ^deebee | | | |
| 122 | 122 | | dee-bar | protein_g | 1.8 | | | 4 | 1.8g (4%) | known | printed | ^deebee | | | |
| 123 | 123 | | dee-bar | salt_g | 0.16 | | | 3 | 0.16g (3%) | known | printed | ^deebee | | | |
| 124 | 124 | | front-bar | energy_kj | 742 | | | | 742kJ | known | printed | ^off-front | | | |
| 125 | 125 | | front-bar | energy_kcal | 177 | | | 9 | 177kcal 9%* | known | printed | ^off-front | | | |
| 126 | 126 | | front-100 | energy_kj | 1882 | | | | 1882 kJ | known | printed | ^off-front | The left edge of the figure is creased in the photo; the Dee Bee sheet prints 1883 kJ. | | |
| 127 | 127 | | front-100 | energy_kcal | 448 | | | | 448 kcal | known | printed | ^off-front | | | |
| 128 | 128 | | off-100 | energy_kcal | 450 | | | | | known | printed | ^off | | | |
| 129 | 129 | | off-100 | fat_g | 16.9 | | | | | known | printed | ^off | | | |
| 130 | 130 | | off-100 | saturated_fat_g | 8.2 | | | | | known | printed | ^off | | | |
| 131 | 131 | | off-100 | carbohydrate_g | 69.3 | | | | | known | printed | ^off | | | |
| 132 | 132 | | off-100 | sugars_g | 59.9 | | | | | known | printed | ^off | | | |
| 133 | 133 | | off-100 | protein_g | 4.3 | | | | | known | printed | ^off | | | |
| 134 | 134 | | off-100 | salt_g | 0.39 | | | | | known | printed | ^off | | | |
| 135 | 135 | <!--/nutrition_values--> | |
| 136 | 136 | ||
| 137 | 137 | ## Allergen declarations <!--allergens--> | |
| 138 | 138 | | observation | allergen | declaration | source | note | | |
| 139 | 139 | | ------------ | -------- | ----------- | ------- | -------------------------------------------------- | | |
| 140 | 140 | | deebee-sheet | barley | contains | ^deebee | Allergy Advice: Contains: Barley, Eggs, Milk, Soya | | |
| 141 | 141 | | deebee-sheet | eggs | contains | ^deebee | | | |
| 142 | 142 | | deebee-sheet | milk | contains | ^deebee | | | |
| 143 | 143 | | deebee-sheet | soya | contains | ^deebee | | | |
| 144 | 144 | <!--/allergens--> | |
| 145 | 145 | ||
| 146 | 146 | ## Label claims <!--claims--> | |
| 147 | 147 | | observation | claim | kind | source | note | | |
| 148 | 148 | | ------------ | ------------------------------------------------------ | ------------- | ------- | ---------------------------------------------------------------------- | | |
| 149 | 149 | | deebee-sheet | Free from artificial colours, flavours & preservatives | label | ^deebee | | | |
| 150 | 150 | | deebee-sheet | Suitable for vegetarians | label | ^deebee | | | |
| 151 | 151 | | deebee-sheet | Kosher - KLBD-D | certification | ^deebee | KLBD is the London Beth Din kosher authority; D marks a dairy product. | | |
| 152 | 152 | <!--/claims--> | |
| 153 | 153 | ||
| 154 | 154 | ## Research gaps <!--research_gaps--> | |
| 155 | 155 | | observation | domain | state | detail | source | | |
| 156 | 156 | | ------------ | ----------- | -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------- | | |
| 157 | 157 | | | ingredients | disputed | The Dee Bee data sheet lists whey permeate, palm fat before lactose and vanilla extract with no hydrolysed milk protein; the Open Food Facts and USDA text lists whey powder, hydrolysed milk protein and natural vanilla extract. Which is the later label is not dated by either source. | ^deebee | | |
| 158 | 158 | | | identity | unknown | Dee Bee marks this EAN No Longer Available and the family page records 5000159551724 as the UK Duo and 5000159519328 as the French one, but no Mars page states that this code was withdrawn; status is left unset. | ^deebee | | |
| 159 | 159 | | | markets | not_researched | Amazon.fr: web searches for Mars Duo 78,8 g found only lots of 3 (B013P4YIVO, EUR 4.59 on 2026-09-25) and 6 (B013P4YLBG) bars, not the single pack, and no page printing this barcode; the store's own search answered with a bot challenge. | | | |
| 160 | 160 | | | markets | unknown | USDA Branded Foods holds a Label Insight record for this barcode (fdc 511386) and Open Food Facts tags the United States; no US retailer listing was checked, so US is not in country_of_sale. | ^usda | | |
| 161 | 161 | | fr-side-2017 | ingredients | unknown | The French ingredient statement on the 2017 side-panel photo is torn and cannot be transcribed in full. | ^off-side | | |
| 162 | 162 | <!--/research_gaps--> | |
| 163 | 163 | ||
| 164 | 164 | ## Research <!--research--> | |
| 165 | 165 | structure_version: 2 | |
| 166 | 166 | reviewed_on: 2026-09-25 | |
| 167 | 167 | <!--/research--> | |
| 168 | 168 | ||
| 169 | + | ## Images <!--images--> | |
| 170 | + | | asset | kind | source | licence | attribution | url | accessed | note | provider_entity_id | provider_image_id | source_image_url | download_url | retrieved_at | matched_barcode | match_method | match_confidence | original_width | original_height | stored_width | stored_height | upscaled | observation | | |
| 171 | + | | ------------------------ | ----------- | --------------- | ------------ | ---------------------------- | ----------------------------------------------------- | ---------- | ---- | ------------------ | ----------------- | ------------------------------------------------------------------------------------------- | ------------ | ------------------------ | --------------- | ------------ | ---------------- | -------------- | --------------- | ------------ | ------------- | -------- | ----------- | | |
| 172 | + | | front-0c571b09.jpg | front | open-food-facts | cc-by-sa-3.0 | Open Food Facts contributors | https://world.openfoodfacts.org/product/5000159470490 | 2026-09-25 | | 5000159470490 | front_en | https://images.openfoodfacts.org/images/products/500/015/947/0490/front_en.10.full.jpg | | 2026-09-25T19:18:57.822Z | 5000159470490 | barcode | 1 | 4032 | 3024 | 1600 | 1200 | | | | |
| 173 | + | | ingredients-4c199d4f.jpg | ingredients | open-food-facts | cc-by-sa-3.0 | Open Food Facts contributors | https://world.openfoodfacts.org/product/5000159470490 | 2026-09-25 | | 5000159470490 | ingredients_fr | https://images.openfoodfacts.org/images/products/500/015/947/0490/ingredients_fr.6.full.jpg | | 2026-09-25T19:18:57.984Z | 5000159470490 | barcode | 1 | 3264 | 536 | 1600 | 263 | | | | |
| 174 | + | <!--/images--> | |
| 175 | + | ||
| 169 | 176 | ## References <!--references--> | |
| 170 | 177 | | ref | url | title | accessed | publisher | kind | published | record_id | locator | licence | attribution | upstream | | |
| 171 | 178 | | --------- | ------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | ---------- | ----------------- | ----------- | ---------- | ------------- | ------------------------------------------- | ------------ | ---------------------------- | -------- | | |
| 172 | 179 | | off | https://world.openfoodfacts.org/product/5000159470490 | Open Food Facts: Mars duo, milk chocolate with soft nougat and caramel centre bar (5000159470490) | 2026-09-25 | Open Food Facts | catalogue | | 5000159470490 | | ODbL | Open Food Facts contributors | | | |
| 173 | 180 | | off-front | https://images.openfoodfacts.org/images/products/500/015/947/0490/2.jpg | Front of the Mars Duo wrapper | 2026-09-25 | Open Food Facts | pack | 2021-05-30 | 5000159470490 | imgid 2, 4032 x 3024 px | CC BY-SA 3.0 | Open Food Facts contributors | off | | |
| 174 | 181 | | off-side | https://images.openfoodfacts.org/images/products/500/015/947/0490/ingredients_fr.6.full.jpg | Side panel of the Mars Duo wrapper with the UK operator and French importer lines | 2026-09-25 | Open Food Facts | pack | 2017-04-23 | 5000159470490 | imgid 1, crop 3264 x 536 px | CC BY-SA 3.0 | Open Food Facts contributors | off | | |
| 175 | 182 | | usda | https://fdc.nal.usda.gov/food-details/511386/nutrients | USDA FoodData Central, Branded Foods (LI), fdc_id 511386: Mars Duo | 2026-09-25 | USDA | catalogue | 2019-04-01 | 511386 | | CC0 | | | | |
| 176 | 183 | | deebee | https://www.deebee.co.uk/product/id/146222 | Mars Caramel Nougat & Milk Chocolate Snack Bar Duo 78.8g | 2026-09-25 | Dee Bee Wholesale | retailer | | 5000159470490 | 32 x 78.8GM, RRP GBP 1.50, added 07/01/2014 | | | | | |
| 177 | 184 | | devo | https://devo.co.uk/shop/premier-harts-se27/product/mars-duo-78g-5000159470490 | Mars Duo at Premier - Harts, Norwood, London | 2026-09-25 | Devo | retailer | | 5000159470490 | GBP 1.45, in stock | | | | | |
| 178 | 185 | | amazon-uk | https://www.amazon.co.uk/dp/B01ET7KD1K | Mars Duo 78.8g : Amazon.co.uk: Grocery | 2026-09-25 | Amazon.co.uk | retailer | | B01ET7KD1K | | | | | | |
| 179 | 186 | | gs1-gdsn | https://www.gs1.org/docs/gdsn/stats/gdsn_trading_partners.pdf | GDSN trading partners: GS1 GDSN member companies and their GLNs | 2026-09-25 | GS1 | registry | | 5000159000000 | | | | | | |
| 180 | 187 | | wp-mars | https://en.wikipedia.org/wiki/Mars_bar | Mars bar | 2026-09-25 | Wikipedia | publication | | | | | | | | |
| 181 | 188 | <!--/references--> | |
| 182 | 189 | ||
| 183 | 190 | ## About <!--about--> | |
| 184 | 191 | Mars Duo 78.8 g is the two-bar pack of the Mars caramel and nougat bar in milk chocolate, two 39.4 g bars in one wrapper, and the successor to the king-size single Mars bar.[^wp-mars][^off-front] It is made in the United Kingdom by Mars Wrigley Confectionery UK, whose earlier name Mars Chocolate UK Ltd, Slough, is printed on the wrapper beside an importer line for Mars Chocolat France at Haguenau, so the same pack served British and French shelves.[^deebee][^off-side] The bar is described as milk chocolate with soft nougat (32%) and a caramel centre (27%), at 448 kcal per 100 g and 177 kcal per bar.[^deebee][^off-front] It is labelled suitable for vegetarians and kosher under the London Beth Din.[^deebee] | |
| 185 | 192 | ||
| 186 | 193 | A British wholesaler added this barcode in January 2014 in cases of 32 at a recommended price of GBP 1.50, and a London convenience store still sold it at GBP 1.45 in September 2026.[^deebee][^devo] When Wikipedia described the range as of 2008, the Duo weighed 85 g.[^wp-mars] | |
| 187 | 194 | <!--/about--> |
Source of v1
# Mars Duo 78.8 g <!--product-->
## Identity <!--identity-->
gtin: 05000159470490
name: Mars Duo 78.8 g
family: family/mars-bar
default_observation: deebee-sheet
summary: Two-bar Mars pack of 2 x 39.4 g made by Mars in the United Kingdom, with a French importer line on the wrapper.
brand: brand/mars
category: category/10000045
net_content: 78.8 g
country_of_sale: GB, FR
country_of_origin: GB
piece_count: 2
pack_format: two-bar wrapper
last_seen: 2026-09-25
last_seen_note: In stock at GBP 1.45 at a Premier convenience store in West Norwood, London, on Devo.
<!--/identity-->
## Relations <!--relations-->
| role | target | market | from | until | ended | status | source | note |
| ------------------- | ----------------------------------------- | ------ | ---- | ----- | ----- | ------- | --------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| brand_owner_at_sale | company/mars-wrigley-confectionery-uk | GB | | | | printed | ^off-side | The wrapper prints "Mars Chocolate UK Ltd, Slough, SL1 4JX", the former name of Mars Wrigley Confectionery UK Limited. |
| manufactured_by | company/mars-wrigley-confectionery-uk | | | | | sourced | ^deebee | Dee Bee Wholesale names the manufacturer as Mars Wrigley Confect UK and the country of origin as United Kingdom. |
| imported_by | company/mars-wrigley-confectionery-france | FR | | | | printed | ^off-side | Printed beside an F flag: "IMP: Mars Chocolat France, 3 Chemin de la Sandlach, CS 10036 - 67 501 Haguenau Cedex"; Mars Chocolat France is the former name of Mars Wrigley Confectionery France. |
| gs1_prefix_owner | company/mars-wrigley-confectionery-france | | | | | sourced | ^gs1-gdsn | Prefix 5000159; GS1's GDSN trading-partner list gives GLN 5000159000000 to MARS CHOCOLAT FRANCE, as the company page states. |
<!--/relations-->
## Markets <!--markets-->
| country | status | source | note | observed | condition | origin | price |
| ------- | ------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- | --------- | ------ | -------- |
| GB | printed | ^off-side | UK operator block "Mars Chocolate UK Ltd, Slough, SL1 4JX" printed on the wrapper. | 2017-04-23 | | | |
| GB | sourced | ^devo | Premier - Harts, 116 Norwood High Street, London SE27: Mars Duo 78g, in stock; the listing URL carries this barcode. | 2026-09-25 | new | | GBP 1.45 |
| GB | sourced | ^deebee | Dee Bee Wholesale lists EAN 5000159470490 in cases of 32 at an RRP of GBP 1.50, added 7 January 2014; the wholesaler now marks it No Longer Available. | 2026-09-25 | | GB | GBP 1.50 |
| GB | derived | ^amazon-uk | Amazon.co.uk ASIN B01ET7KD1K, Mars Duo 78.8 g, pack of 1, under Grocery > Food Cupboard > Snacks & Sweets > Chocolate Candy; manufacturer Mars Wrigley Confectionery UK; no barcode printed on the page, and it showed no price because the item could not be dispatched to the delivery location of the reading. | 2026-09-25 | new | | |
| FR | printed | ^off-side | French importer line (IMP, F flag) for Mars Chocolat France at Haguenau above a French ingredient statement. | 2017-04-23 | | | |
<!--/markets-->
## Aliases <!--aliases-->
| name | type | locale | from | until |
| ---------------------------------------------------------------- | ------ | ------ | ---- | ----- |
| Mars Duo | search | en | | |
| Mars Duo Chocolate Bar 78.8g | search | en | | |
| Mars Caramel Nougat & Milk Chocolate Snack Bar Duo 78.8g | search | en | | |
| Mars duo, milk chocolate with soft nougat and caramel centre bar | search | en | | |
<!--/aliases-->
## Ingredients <!--ingredients-->
| ingredient | role | kind | note | percent | basis | market | from | until | source | id | observation | parent_id | position | printed_name | state |
| ------------------------------ | ---------- | ----- | ----------------------------------- | ------- | ----- | ------ | ---- | ----- | ------- | --- | ------------ | --------- | -------- | -------------------------- | ----- |
| ingredient/sugar | | label | | | | | | | ^deebee | d1 | deebee-sheet | | 1 | Sugar | known |
| ingredient/glucose-syrup | | label | | | | | | | ^deebee | d2 | deebee-sheet | | 2 | Glucose Syrup | known |
| ingredient/skimmed-milk-powder | | label | | | | | | | ^deebee | d3 | deebee-sheet | | 3 | Skimmed Milk Powder | known |
| ingredient/cocoa-butter | | label | | | | | | | ^deebee | d4 | deebee-sheet | | 4 | Cocoa Butter | known |
| ingredient/cocoa-mass | | label | | | | | | | ^deebee | d5 | deebee-sheet | | 5 | Cocoa Mass | known |
| ingredient/sunflower-oil | | label | | | | | | | ^deebee | d6 | deebee-sheet | | 6 | Sunflower Oil | known |
| ingredient/butterfat | | label | | | | | | | ^deebee | d7 | deebee-sheet | | 7 | Milk Fat | known |
| ingredient/palm-fat | | label | | | | | | | ^deebee | d8 | deebee-sheet | | 8 | Palm Fat | known |
| ingredient/lactose | | label | | | | | | | ^deebee | d9 | deebee-sheet | | 9 | Lactose | known |
| ingredient/whey-permeate | | label | | | | | | | ^deebee | d10 | deebee-sheet | | 10 | Whey Permeate (from Milk) | known |
| ingredient/fat-reduced-cocoa | | label | | | | | | | ^deebee | d11 | deebee-sheet | | 11 | Fat Reduced Cocoa | known |
| ingredient/barley-malt-extract | | label | | | | | | | ^deebee | d12 | deebee-sheet | | 12 | Barley Malt Extract | known |
| ingredient/soy-lecithin | emulsifier | label | | | | | | | ^deebee | d13 | deebee-sheet | | 13 | Emulsifier (Soya Lecithin) | known |
| ingredient/salt | | label | | | | | | | ^deebee | d14 | deebee-sheet | | 14 | Salt | known |
| ingredient/egg-white-powder | | label | | | | | | | ^deebee | d15 | deebee-sheet | | 15 | Egg White Powder | known |
| ingredient/vanilla-extract | | label | | | | | | | ^deebee | d16 | deebee-sheet | | 16 | Vanilla Extract | known |
| ingredient/sugar | | label | | | | | | | ^off | o1 | off-typed | | 1 | Sugar | known |
| ingredient/glucose-syrup | | label | | | | | | | ^off | o2 | off-typed | | 2 | glucose syrup | known |
| ingredient/skimmed-milk-powder | | label | | | | | | | ^off | o3 | off-typed | | 3 | skimmed milk powder | known |
| ingredient/cocoa-butter | | label | | | | | | | ^off | o4 | off-typed | | 4 | cocoa butter | known |
| ingredient/cocoa-mass | | label | | | | | | | ^off | o5 | off-typed | | 5 | cocoa mass | known |
| ingredient/sunflower-oil | | label | | | | | | | ^off | o6 | off-typed | | 6 | sunflower oil | known |
| ingredient/butterfat | | label | | | | | | | ^off | o7 | off-typed | | 7 | milk fat | known |
| ingredient/lactose | | label | | | | | | | ^off | o8 | off-typed | | 8 | lactose | known |
| ingredient/whey-powder | | label | | | | | | | ^off | o9 | off-typed | | 9 | whey powder (from milk) | known |
| ingredient/palm-fat | | label | | | | | | | ^off | o10 | off-typed | | 10 | palm fat | known |
| ingredient/fat-reduced-cocoa | | label | | | | | | | ^off | o11 | off-typed | | 11 | fat reduced cocoa | known |
| ingredient/barley-malt-extract | | label | | | | | | | ^off | o12 | off-typed | | 12 | barley malt extract | known |
| ingredient/soy-lecithin | emulsifier | label | | | | | | | ^off | o13 | off-typed | | 13 | emulsifier (soya lecithin) | known |
| ingredient/salt | | label | | | | | | | ^off | o14 | off-typed | | 14 | salt | known |
| ingredient/egg-white-powder | | label | | | | | | | ^off | o15 | off-typed | | 15 | egg white powder | known |
| ingredient/milk-protein | | label | Printed as hydrolysed milk protein. | | | | | | ^off | o16 | off-typed | | 16 | hydrolysed milk protein | known |
| ingredient/vanilla-extract | | label | | | | | | | ^off | o17 | off-typed | | 17 | natural vanilla extract | known |
<!--/ingredients-->
## Observations <!--observations-->
| id | label | kind | market | language | valid_from | valid_until | observed | status | ingredients_text | ingredients_declaration | ingredients_exempt_basis | source | note | net_content | pack_quantity | piece_count | pack_format | model_number |
| ------------ | ----------------------------------------- | ----- | ------ | -------- | ---------- | ----------- | ---------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------- | ------------------------ | ---------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | ------------- | ----------- | --------------- | ------------ |
| deebee-sheet | UK product data sheet (Dee Bee Wholesale) | label | GB | en | | | 2026-09-25 | supported | Sugar, Glucose Syrup, Skimmed Milk Powder, Cocoa Butter, Cocoa Mass, Sunflower Oil, Milk Fat, Palm Fat, Lactose, Whey Permeate (from Milk), Fat Reduced Cocoa, Barley Malt Extract, Emulsifier (Soya Lecithin), Salt, Egg White Powder, Vanilla Extract, Milk Chocolate contains Milk Solids 14% minimum, Milk Chocolate contains Vegetable Fats in addition to Cocoa Butter | listed | | ^deebee | Standardised name "Milk chocolate with soft nougat (32%) and caramel centre (27%)"; portion 39.4 g, 2 portions per pack; country of origin United Kingdom. | 78.8 g | | 2 | two-bar wrapper | |
| off-typed | Open Food Facts typed English record | label | | en | | | 2026-03-18 | unconfirmed | Sugar, glucose syrup, skimmed milk powder, cocoa butter, cocoa mass, sunflower oil, milk fat, lactose, whey powder (from milk), palm fat, fat reduced cocoa, barley malt extract, emulsifier (soya lecithin), salt, egg white powder, hydrolysed milk protein, natural vanilla extract. | listed | | ^off | Typed by contributors, last edited 2026-03-18; the USDA Branded Foods record fdc 511386 (modified 2017-10-17) carries the same list and the same energy, fat, protein and carbohydrate figures, so the two are one line of evidence. | | | | | |
| front-2021 | Front of the wrapper, photo 2021 | label | | en | | | 2021-05-30 | supported | | | | ^off-front | Front photo (imgid 2): "= 39.4g", a per-bar energy badge and "100g: 1882 kJ / 448 kcal". | | | | two-bar wrapper | |
| fr-side-2017 | Side panel with French text, photo 2017 | label | FR | fr | | | 2017-04-23 | supported | | | | ^off-side | Side panel (imgid 1) with the UK operator and French importer lines and the French denomination "Chocolat au lait fourré de confiserie (32%) et caramel (27%)"; the ingredient statement is torn in the photo and only partly legible. | | | | two-bar wrapper | |
<!--/observations-->
## Nutrition panels <!--nutrition_panels-->
| id | observation | label | basis | basis_state | basis_note | declaration | exempt_basis | source | note |
| --------- | ------------ | -------------------- | ------ | ----------- | ---------- | ----------- | ------------ | ---------- | ----------------------------------------------------------------------------------------------------------------------- |
| dee-100 | deebee-sheet | Per 100 g | 100 g | as_sold | | transcribed | | ^deebee | |
| dee-bar | deebee-sheet | Per 39.4 g bar | 39.4 g | as_sold | | transcribed | | ^deebee | % reference intakes of an average adult (8400 kJ/2000 kcal) as the sheet prints them. |
| front-bar | front-2021 | Front badge per bar | 39.4 g | as_sold | | transcribed | | ^off-front | |
| front-100 | front-2021 | Front line per 100 g | 100 g | as_sold | | transcribed | | ^off-front | |
| off-100 | off-typed | Per 100 g (typed) | 100 g | as_sold | | secondary | | ^off | Contributor-typed values; the USDA record prints 450 kcal, 16.9 g fat, 69.3 g carbohydrate and 4.3 g protein per 100 g. |
<!--/nutrition_panels-->
## Nutrition values <!--nutrition_values-->
| panel | nutrient | value | qualifier | value_max | dv_percent | printed_value | state | method | source | note |
| --------- | --------------- | ----- | --------- | --------- | ---------- | ------------- | ----- | ------- | ---------- | -------------------------------------------------------------------------------------- |
| dee-100 | energy_kj | 1883 | | | | 1883kJ | known | printed | ^deebee | |
| dee-100 | energy_kcal | 448 | | | | 448kcal | known | printed | ^deebee | |
| dee-100 | fat_g | 17 | | | | 17g | known | printed | ^deebee | |
| dee-100 | saturated_fat_g | 8.1 | | | | 8.1g | known | printed | ^deebee | |
| dee-100 | carbohydrate_g | 69 | | | | 69g | known | printed | ^deebee | |
| dee-100 | sugars_g | 60 | | | | 60g | known | printed | ^deebee | |
| dee-100 | protein_g | 4.5 | | | | 4.5g | known | printed | ^deebee | |
| dee-100 | salt_g | 0.4 | | | | 0.40g | known | printed | ^deebee | |
| dee-bar | energy_kj | 742 | | | 9 | 742kJ (9%) | known | printed | ^deebee | |
| dee-bar | energy_kcal | 177 | | | 9 | 177kcal (9%) | known | printed | ^deebee | |
| dee-bar | fat_g | 6.6 | | | 9 | 6.6g (9%) | known | printed | ^deebee | |
| dee-bar | saturated_fat_g | 3.2 | | | 16 | 3.2g (16%) | known | printed | ^deebee | |
| dee-bar | carbohydrate_g | 27 | | | 10 | 27g (10%) | known | printed | ^deebee | |
| dee-bar | sugars_g | 24 | | | 27 | 24g (27%) | known | printed | ^deebee | |
| dee-bar | protein_g | 1.8 | | | 4 | 1.8g (4%) | known | printed | ^deebee | |
| dee-bar | salt_g | 0.16 | | | 3 | 0.16g (3%) | known | printed | ^deebee | |
| front-bar | energy_kj | 742 | | | | 742kJ | known | printed | ^off-front | |
| front-bar | energy_kcal | 177 | | | 9 | 177kcal 9%* | known | printed | ^off-front | |
| front-100 | energy_kj | 1882 | | | | 1882 kJ | known | printed | ^off-front | The left edge of the figure is creased in the photo; the Dee Bee sheet prints 1883 kJ. |
| front-100 | energy_kcal | 448 | | | | 448 kcal | known | printed | ^off-front | |
| off-100 | energy_kcal | 450 | | | | | known | printed | ^off | |
| off-100 | fat_g | 16.9 | | | | | known | printed | ^off | |
| off-100 | saturated_fat_g | 8.2 | | | | | known | printed | ^off | |
| off-100 | carbohydrate_g | 69.3 | | | | | known | printed | ^off | |
| off-100 | sugars_g | 59.9 | | | | | known | printed | ^off | |
| off-100 | protein_g | 4.3 | | | | | known | printed | ^off | |
| off-100 | salt_g | 0.39 | | | | | known | printed | ^off | |
<!--/nutrition_values-->
## Allergen declarations <!--allergens-->
| observation | allergen | declaration | source | note |
| ------------ | -------- | ----------- | ------- | -------------------------------------------------- |
| deebee-sheet | barley | contains | ^deebee | Allergy Advice: Contains: Barley, Eggs, Milk, Soya |
| deebee-sheet | eggs | contains | ^deebee | |
| deebee-sheet | milk | contains | ^deebee | |
| deebee-sheet | soya | contains | ^deebee | |
<!--/allergens-->
## Label claims <!--claims-->
| observation | claim | kind | source | note |
| ------------ | ------------------------------------------------------ | ------------- | ------- | ---------------------------------------------------------------------- |
| deebee-sheet | Free from artificial colours, flavours & preservatives | label | ^deebee | |
| deebee-sheet | Suitable for vegetarians | label | ^deebee | |
| deebee-sheet | Kosher - KLBD-D | certification | ^deebee | KLBD is the London Beth Din kosher authority; D marks a dairy product. |
<!--/claims-->
## Research gaps <!--research_gaps-->
| observation | domain | state | detail | source |
| ------------ | ----------- | -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------- |
| | ingredients | disputed | The Dee Bee data sheet lists whey permeate, palm fat before lactose and vanilla extract with no hydrolysed milk protein; the Open Food Facts and USDA text lists whey powder, hydrolysed milk protein and natural vanilla extract. Which is the later label is not dated by either source. | ^deebee |
| | identity | unknown | Dee Bee marks this EAN No Longer Available and the family page records 5000159551724 as the UK Duo and 5000159519328 as the French one, but no Mars page states that this code was withdrawn; status is left unset. | ^deebee |
| | markets | not_researched | Amazon.fr: web searches for Mars Duo 78,8 g found only lots of 3 (B013P4YIVO, EUR 4.59 on 2026-09-25) and 6 (B013P4YLBG) bars, not the single pack, and no page printing this barcode; the store's own search answered with a bot challenge. | |
| | markets | unknown | USDA Branded Foods holds a Label Insight record for this barcode (fdc 511386) and Open Food Facts tags the United States; no US retailer listing was checked, so US is not in country_of_sale. | ^usda |
| fr-side-2017 | ingredients | unknown | The French ingredient statement on the 2017 side-panel photo is torn and cannot be transcribed in full. | ^off-side |
<!--/research_gaps-->
## Research <!--research-->
structure_version: 2
reviewed_on: 2026-09-25
<!--/research-->
## References <!--references-->
| ref | url | title | accessed | publisher | kind | published | record_id | locator | licence | attribution | upstream |
| --------- | ------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- | ---------- | ----------------- | ----------- | ---------- | ------------- | ------------------------------------------- | ------------ | ---------------------------- | -------- |
| off | https://world.openfoodfacts.org/product/5000159470490 | Open Food Facts: Mars duo, milk chocolate with soft nougat and caramel centre bar (5000159470490) | 2026-09-25 | Open Food Facts | catalogue | | 5000159470490 | | ODbL | Open Food Facts contributors | |
| off-front | https://images.openfoodfacts.org/images/products/500/015/947/0490/2.jpg | Front of the Mars Duo wrapper | 2026-09-25 | Open Food Facts | pack | 2021-05-30 | 5000159470490 | imgid 2, 4032 x 3024 px | CC BY-SA 3.0 | Open Food Facts contributors | off |
| off-side | https://images.openfoodfacts.org/images/products/500/015/947/0490/ingredients_fr.6.full.jpg | Side panel of the Mars Duo wrapper with the UK operator and French importer lines | 2026-09-25 | Open Food Facts | pack | 2017-04-23 | 5000159470490 | imgid 1, crop 3264 x 536 px | CC BY-SA 3.0 | Open Food Facts contributors | off |
| usda | https://fdc.nal.usda.gov/food-details/511386/nutrients | USDA FoodData Central, Branded Foods (LI), fdc_id 511386: Mars Duo | 2026-09-25 | USDA | catalogue | 2019-04-01 | 511386 | | CC0 | | |
| deebee | https://www.deebee.co.uk/product/id/146222 | Mars Caramel Nougat & Milk Chocolate Snack Bar Duo 78.8g | 2026-09-25 | Dee Bee Wholesale | retailer | | 5000159470490 | 32 x 78.8GM, RRP GBP 1.50, added 07/01/2014 | | | |
| devo | https://devo.co.uk/shop/premier-harts-se27/product/mars-duo-78g-5000159470490 | Mars Duo at Premier - Harts, Norwood, London | 2026-09-25 | Devo | retailer | | 5000159470490 | GBP 1.45, in stock | | | |
| amazon-uk | https://www.amazon.co.uk/dp/B01ET7KD1K | Mars Duo 78.8g : Amazon.co.uk: Grocery | 2026-09-25 | Amazon.co.uk | retailer | | B01ET7KD1K | | | | |
| gs1-gdsn | https://www.gs1.org/docs/gdsn/stats/gdsn_trading_partners.pdf | GDSN trading partners: GS1 GDSN member companies and their GLNs | 2026-09-25 | GS1 | registry | | 5000159000000 | | | | |
| wp-mars | https://en.wikipedia.org/wiki/Mars_bar | Mars bar | 2026-09-25 | Wikipedia | publication | | | | | | |
<!--/references-->
## About <!--about-->
Mars Duo 78.8 g is the two-bar pack of the Mars caramel and nougat bar in milk chocolate, two 39.4 g bars in one wrapper, and the successor to the king-size single Mars bar.[^wp-mars][^off-front] It is made in the United Kingdom by Mars Wrigley Confectionery UK, whose earlier name Mars Chocolate UK Ltd, Slough, is printed on the wrapper beside an importer line for Mars Chocolat France at Haguenau, so the same pack served British and French shelves.[^deebee][^off-side] The bar is described as milk chocolate with soft nougat (32%) and a caramel centre (27%), at 448 kcal per 100 g and 177 kcal per bar.[^deebee][^off-front] It is labelled suitable for vegetarians and kosher under the London Beth Din.[^deebee]
A British wholesaler added this barcode in January 2014 in cases of 32 at a recommended price of GBP 1.50, and a London convenience store still sold it at GBP 1.45 in September 2026.[^deebee][^devo] When Wikipedia described the range as of 2008, the Duo weighed 85 g.[^wp-mars]
<!--/about-->