Shrimp Shells

Preparation:

Preparation: Wash the prawns well and immerse them in a pot of boiling water in which you have put the bay leaf, thyme, parsley, a pinch of salt and a few grains of pepper. Cook them for a few minutes and drain them. Place the yolks of the two hard-boiled eggs in a cup and crush them: add a pinch of salt, one of pepper and the paprika; mix with a wooden spoon, as if you were whipping mayonnaise, adding the oil and lemon juice little by little. When the mixture looks like a rather fluid cream, add the Worcester sauce, ketchup, sherry and cream, mixing everything well. You will have to obtain a soft and velvety cream. Wash four nice lettuce leaves, place them on the bottom of the shells, put two or three spoonfuls of shrimp on top and cover them with the already prepared sauce.