Split a live lobster and put in a large omelet pan, sprinkle with one-fourth onion finely chopped and a few grains of cayenne and cook five minutes. Add one-half cup Tomato Sauce II and cook three minutes; then add two tablespoons Sherry wine, cover, and cook in oven seven minutes. To the liver add one tablespoon wine, two tablespoons Tomato Sauce and one-half tablespoon melted butter; heat in pan after lobster has been removed. As soon as sauce is heated, strain, and pour over lobster.