Melt butter or margarine until hot, and then add the flour, stirring constantly about five minutes or until the mixture bubbles.
Pour in the hot milk in small amounts, stirring constantly until the sauce is smooth.
Add the Worcestershire sauce and seasonings. Remove from the stove, and stir in the grated cheese, mixing until cheese is melted. Keep hot.
Mix the cheese sauce with cooked macaroni pasta
Makes 10 cups of cheese sauce.
Leftover sauce can be frozen for use another day