White Mountain Frosting
["1/2 c. sugar", "2 Tbsp. water", "1/4 c. light corn syrup (Karo)", "2 egg whites (1/4 c.)", "1 tsp. vanilla"]
["Mix in saucepan sugar, water and corn syrup.", "Cover; bring to boil.", "Remove cover.", "Cook to 242\u00b0 on candy thermometer.", "Just before syrup is ready, beat egg whites until stiff.", "Pour hot syrup over egg whites very slowly while beating with electric mixer.", "Beat until frosting holds peaks.", "Blend in vanilla."]
["sugar", "water", "light corn syrup", "egg whites", "vanilla"]