7-Minute Frosting - cooking recipe

Ingredients

1 3/4 c. sugar
2 unbeaten egg whites
1 tsp. baking powder
6 Tbsp. water
2 tsp. vanilla

Preparation

Combine all ingredients except vanilla in top of a double boiler. Place it over boiling water and beat with rotary beater for exactly 7 minutes. Cool. Add vanilla and spread on cake.