Never Fail Fluffy Frosting
["3/4 c. sugar", "3 egg whites", "6 tsp. white Karo", "1/4 tsp. cream of tartar", "1/2 tsp. vanilla"]
["Put all ingredients in top of double boiler.", "Have water in bottom part hot or almost boiling.", "Begin to beat with mixer at once.", "Beat until desired thickness.", "Spread on cool cake.", "Enough for a 2 layer (9-inch) cake."]
["sugar", "egg whites", "white Karo", "cream of tartar", "vanilla"]