1 1/2 c. egg whites (approximately 12)
1/4 tsp. salt
1 tsp. cream of tartar
1 c. sifted granulated sugar
1 c. powdered sugar
1 c. sifted cake flour
1 tsp. vanilla

While preheating the oven, put empty 10 inch tube pan in the oven. Beat whites with salt and cream of tartar until stiff, but not dry. Fold in granulated sugar 2 tablespoons at a time. Sift powdered sugar and flour 5 times, fold into egg mixture 2 tablespoons at a time, add vanilla. Remove pan from oven and pour batter immediately into hot pan. Bake in hot oven at 375 degrees exactly 23 minutes. Let cool in pan and then remove.