Ingredient dictionary
Red onion on a food label: allergens, diets and other names
Red onion is a kind of onion. It is not one of the allergens that labels must declare. It is vegan. Open Food Facts finds it in 3,059 products, most often in ready meals.
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Does red onion contain an allergen?
Red onion is not one of the allergens that food labels must declare in the US, the UK, Europe or the Gulf. Open Food Facts does not link it to an allergen, and Bravoora’s label checker does not read the name as one.
Is red onion vegan?
Yes. Red onion is vegan and vegetarian: Open Food Facts records nothing from an animal in it.
A pack can differ from the usual recipe: the app reads the label in your hand.
What other names does red onion have on a label?
In English red onion can also read “red onions”. On European labels it is “oignon rouge” in French, “rote Zwiebel” in German and “cebolla roja” in Spanish. The other 13 languages are listed below.
- French
- oignon rouge, oignons rouges
- German
- rote Zwiebel, rote Zwiebeln
- Spanish
- cebolla roja
- Italian
- cipolla rossa
- Dutch
- rode ui, rode uien
- Portuguese
- Cebola vermelha
- Polish
- czerwona cebula, cebula czerwona
- Swedish
- rödlök
- Danish
- rødløg
- Norwegian
- rødløk
- Finnish
- punasipuli
- Czech
- červená cibule
- Hungarian
- lilahagyma
- Romanian
- ceapă roșie
- Croatian
- crveni luk, luk crveni
- Turkish
- kırmızı soğan
Which foods contain red onion?
Open Food Facts lists red onion in the ingredients of 3,059 products, most often ready meals, pizzas, pies and quiches and vegetables. Most of them are sold in the United States, France and the United Kingdom.
Products with it, by country of sale: United States 1,067 · France 683 · United Kingdom 619 · Germany 209.
Counted on 13 October 2026 from the Open Food Facts product database, which volunteers fill from real packs: it shows where red onion turns up, not how much of the market it is.
What kind of ingredient is red onion?
Red onion is a kind of onion.
Bravoora reads this ingredient for everyone you shop for: an allergy or intolerance, a vegan or vegetarian diet, a calorie or protein goal, and the labels on supplements and skincare too. Build a profile · For dietitians, doctors and trainers
Sources
An allergen is stated only when two of three checks agree: the Open Food Facts record, Bravoora’s label checker, and the ingredient’s own name or family (oat flour is oats, a cheese is milk). Every name where they disagree waits for a person to review it.
- Open Food Facts: Red onion
- Open Food Facts: ingredients taxonomy (names, family tree, allergen and vegan flags), ODbL
- Open Food Facts: product database, 4,535,553 products, read 13 October 2026, ODbL
- Wikipedia: Red onion
Contains information from Open Food Facts, which is made available here under the Open Database License (ODbL). Read the licence · Download this dictionary’s data · How we check
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