Boiled White Frosting - cooking recipe

Ingredients

1 c. sugar
1/3 c. water
1/3 tsp. cream of tartar
2 egg whites
3/4 tsp. vanilla

Preparation

Frost a 13 x 9-inch cake.
Mix in saucepan first 3 ingredients and boil (cover first few minutes so crystals form).
Boil until 6 to 8-inch thread or 242\u00b0.
Beat 2 egg whites until stiff.
Pour syrup into egg whites and beat.
Add vanilla.
Spread.