Seven-Minute Frosting - cooking recipe

Ingredients

2 unbeaten egg whites
2 tsp. light corn syrup
1/2 c. cold water
1 tsp. vanilla
1 1/2 c. sugar
1/4 tsp. cream of tartar
dash of salt

Preparation

Place all ingredients except vanilla in top of double boiler. Beat 1 minute with beater to blend.
Place over boiling water and cook, beating constantly, until frosting forms stiff peaks, about 7 minutes (don't overcook).
Remove from boiling water; add vanilla.
Beat to spreading consistency at 2 minutes.