Uncooked Icing
["1 c. sugar", "1 egg white, unbeaten", "1/4 tsp. cream of tartar", "1/2 c. boiling water", "1 tsp. vanilla"]
["Combine sugar, egg white, cream of tartar and boiling water in a bowl. Mix thoroughly until icing stands in peaks (7-10 minutes). Add vanilla. Make sure cake is completely cool before icing."]
["sugar", "egg", "cream of tartar", "boiling water", "vanilla"]