Ingredient

Mayonnaise

Source
Animal-derived
Allergen
No
Role in food
Mayonnaise is primarily used as a condiment and an ingredient to add richness, flavour, …

What is Mayonnaise?

Mayonnaise is a thick, creamy sauce or dressing. It is traditionally made from oil, egg yolk, and an acid such as vinegar or lemon juice. The oil and egg yolk are emulsified to create its characteristic smooth texture.

Is Mayonnaise vegan?

No. Mayonnaise is animal-derived, so it is not vegan.

Is Mayonnaise a major allergen?

Mayonnaise typically contains eggs, which are one of the 14 major allergens that must be declared on UK food labels.

What is Mayonnaise used for?

Mayonnaise is primarily used as a condiment and an ingredient to add richness, flavour, and moisture to foods.

Is Mayonnaise safe?

Mayonnaise is not classified as a food additive in the UK and does not have an E-number.

Why it's used

Mayonnaise is primarily used as a condiment and an ingredient to add richness, flavour, and moisture to foods. It acts as an emulsifier, binding oil and water-based ingredients together, and is commonly found in sandwiches, salads (like coleslaw), dips, and as a base for other sauces.

Health notes

Mayonnaise is not classified as a food additive in the UK and does not have an E-number. Its primary health implications relate to its fat and calorie content, largely due to the oil used in its production. The NHS advises that foods high in fat, salt, or sugar (HFSS) should be consumed in moderation as part of a balanced diet. EFSA has evaluated the safety of ingredients commonly found in mayonnaise, such as eggs and vegetable oils, in the context of their overall dietary intake.

Allergen info

Mayonnaise typically contains eggs, which are one of the 14 major allergens that must be declared on UK food labels. Some may contain mustard or soya, which are also major allergens.

Foods that contain Mayonnaise

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Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: 17 October 2026

Note: This site presents label data from Open Food Facts for general information. It is not medical advice. Check the package label; formulations change.