2 oz flour, 1/2 a tsp salt and pepper, 1 oz butter, 6 oz grated cheese, 2 cups of milk 1/2 a teaspoon of mustard. 4 eggs.

Make white sauce with the butter, flour and milk, simmer for five minutes. Leave to cool.

Mix the salt, pepper, mustard and cheese into sauce and then the egg yolks.

Beat the egg whites until fluffy and stiff, fold gently into the sauce mixture.

Turn into a greased dish, cook for 30 minutes at 300F until brown. leave for a few minutes and then serve.