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

Combine first 3 ingredients in a heavy saucepan. Cook over medium heat, stirring constantly, until mixture is clear. Cook mixture without stirring until candy thermometer registers 240 degrees.

Beat whites of 3 eggs, at room temperature, until soft peaks form; continue to beat, slowly adding syrup mixture. Add vanilla; continue beating until stiff peaks form and frosting is thick enough to spread. Yield: enough Divinity Frosting for 1 (3 layer) cake.