5 egg yolks (about 1/2 c.)
1 1/2 c. sugar
1 1/2 c. flour
1 tsp. baking powder
1/2 tsp. salt
1/3 c. cold water
2 tsp. vanilla
6 egg whites (3/4 c.)
1/2 tsp. cream of tartar

Heat oven to 325 degrees. In small bowl, beat egg yolks until thick and lemony, 5 minutes. On low speed, mix in flour, baking powder, and salt alternately with water and flavoring.

In large bowl, beat egg whites and cream of tartar until stiff. Gradually fold egg yolk mixture into egg whites. Pour into ungreased tube pan. Cook 60-65 minutes. Invert pan and let cool.