Allergen: Crustaceans – what belongs to it, hidden sources and labelling
Crustaceans 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 prawns, shrimps, scampi, crabs, crayfish, lobster, spiny lobster. In Catering Cat the allergen has the code B.
What belongs to it?
- Prawns, shrimps, scampi
- Crabs, crayfish
- Lobster, spiny lobster
- Products thereof
Where is it often hidden?
- Shrimp paste (curries, Asian sauces)
- Fish soups, bouillabaisse, paella
- Surimi products
- Ready-made seafood mixes
- Shellfish stock and butter
Exemptions under Annex II
The regulation lists no exemptions for this allergen.
Tips for catering and buffets
- Don't overlook shrimp paste in curry pastes and dips – it is often in the small print.
- Crustaceans and molluscs (mussels, squid) are two separate allergens – check both.
- Keep seafood physically separate from other dishes on the buffet.
How it appears on the buffet card
On the back of the card, the allergen is shown with its full name (“Crustaceans”), as a short name (“Crustaceans”) or as the code “B” with a legend – depending on the display you choose in Catering Cat.
Frequently asked questions
Are prawns crustaceans or molluscs?
Prawns are crustaceans. Mussels, oysters, squid and snails are molluscs.
Do I have to declare shrimp paste in a curry?
Yes. Crustaceans must be declared even as part of a paste or sauce.
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.