Allergen: Mustard – what belongs to it, hidden sources and labelling
Mustard is one of the 14 allergens that must be declared under Annex II of Regulation (EU) No 1169/2011 – including for non-prepacked food at a buffet. It covers mustard seeds, mustard flour and powder, prepared mustard. In Catering Cat the allergen has the code J.
What belongs to it?
- Mustard seeds
- Mustard flour and powder
- Prepared mustard
- Mustard leaves and products thereof
Where is it often hidden?
- Dressings and vinaigrettes
- Mayonnaise, remoulade, cocktail sauce
- Marinades and glazes
- Curry sauce, curry powder and spice mixes
- Sausages and deli salads
- Pickles with mustard seeds
Exemptions under Annex II
The regulation lists no exemptions for this allergen.
Tips for catering and buffets
- A teaspoon of mustard in the vinaigrette is enough – the whole salad must declare mustard.
- Many spice mixes and curry powders contain mustard seeds.
- Check the label of bought sauces and dressings.
How it appears on the buffet card
On the back of the card, the allergen is shown with its full name (“Mustard”), as a short name (“Mustard”) or as the code “J” with a legend – depending on the display you choose in Catering Cat.
Frequently asked questions
Does mustard in a dressing have to be declared?
Yes. Even small amounts of mustard in dressings, sauces or marinades must be declared for the dish.
Does curry powder contain mustard?
Often yes – many curry blends contain mustard seeds. Check the ingredient list of the product you use.
All 14 allergens
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Start for freeThis page summarises the rules in general terms and is not legal advice. When in doubt, ask your local food authority.