Basic White Sauce
["2 Tbsp. margarine", "2 Tbsp. flour", "1/2 tsp. salt", "1 c. skim milk", "1 oz. dried onions (optional)", "1/4 c. sliced mushrooms (optional)", "dash of Worcestershire sauce"]
["Slowly melt margarine.", "Add flour and salt.", "Pour in milk gradually, stir until thickens.", "May add onions and mushrooms to margarine before adding flour.", "After mixture thickens, add Worcestershire sauce."]
["margarine", "flour", "salt", "milk", "onions", "mushrooms", "Worcestershire sauce"]