Sea Foam Cake

Mix, sift flour, sugar, and baking powder 3 times. Add this to the egg whites gradually, stirring after each addition. Add vanilla. Place into a well greased pan and line this pan with waxed paper also. Bake at 350* for 35 - 45 minutes. Use sea foam sauce with cake. Sea Foam Sauce 2 Tbsp butter 1/2 c sugar 2 Tbsp flour 1 egg yolk 1 egg white, stiffly beaten 1 tsp vanilla 1/2 c boiling water Cream butter. Mix flour with sugar. Cream into the butter. Add yolk, beat well. Add boiling water and cook over hot water until thick. Cool. Fold in egg white and vanilla.