White Frosting
["2 c. granulated sugar", "3/4 c. water", "2 Tbsp. white Karo syrup", "2 egg whites (1/3 c.), room temperature", "1 1/2 Tbsp. powdered sugar", "1 1/2 tsp. vanilla"]
["Frosts 2 (9-inch) layer cake, 9 x 13-inch layer or large tube cake."]
["sugar", "water", "white Karo syrup", "egg whites", "powdered sugar", "vanilla"]