Drop a cup of macaroni into boiling milk and water, equal parts. Let it boil for an hour, or until perfectly tender. In the meantime prepare the sauce by rubbing a pint of stewed or canned tomatoes through a colander to remove all seeds and fragments. Heat to boiling, thicken with a little flour; a tablespoonful to the pint will be about the requisite proportion. Add salt and if desired, a half cup of very thin sweet cream. Dish the macaroni into individual dishes, and serve with a small quantity of the sauce poured over each dish.