Mama'S Chocolate Frosting
["2 c. sugar", "1/4 c. cocoa", "1/2 c. milk (evaporated)", "1/2 c. butter", "1 tsp. vanilla"]
["Mix sugar, milk and cocoa in saucepan.", "Bring to boil.", "Cook 4 minutes.", "Remove from heat.", "Add butter and stir until frosting begins to thicken.", "Spread on layers."]
["sugar", "cocoa", "milk", "butter", "vanilla"]