Carp cleaned, washed and sprinkle with salt and crushed black pepper. Chopped onions and mushrooms smothered in some of the fat, then add to it some of the tomatoes, chopped, ground walnuts, parsley, a few peppercorns, wine and salt to taste. With this mixture fill the carp. Then the carp sutured and placed in a greased baking dish with butter, cover with the remaining slices of tomatoes and pour the remaining butter and 1/2 cup water. Bake in a moderate oven.