Hot Fudge Sauce
["1 c. sugar", "2 1/2 Tbsp. cornstarch", "2 Tbsp. cocoa", "1 c. hot water", "1/2 c. butter or margarine"]
["Mix dry ingredients.", "Add hot water.", "Cook in double boiler. Bring to boil, stirring constantly.", "Cook 2 to 3 minutes until thick.", "Remove from heat.", "Add the butter or margarine.", "Stir and serve warm over ice cream."]
["sugar", "cornstarch", "cocoa", "water", "butter"]