That wild-caught salmon? It could be farm-raised. Crab, lobster, and scallops have also been victims of fraudulent swaps — and some of the substitutions could be harmful to human health.

Mix together the eggs, cream and nutmeg in a bowl. Season well with salt and pepper and add the parmesan, crab and lobster meat. Fry the spring onions in butter in a frying pan and spoon into the ...