Take off the outside leaves of a lettuce, blanch and drain them well. Put on each leaf a mixture of grated Parmesan, salt, little bits of chopped bacon or ham, add a little good stock, cover over with buttered paper, and cook in a hot oven for five minutes. Then drain off the stock and roll up each leaf with the bacon, etc., put them on croutons of fried bread and pour some good thick gravy over them.