Nut Sponge Cake(Torte)

Directions

1. 1
   Beat 7 yolks 10 minutes.
2. 2
   Add 1 1/2 cups sugar and beat 5 minutes.
3. 3
   Meanwhile, sift cake flour, baking powder and salt.
4. 4
   Add dry ingredients, alternately to egg yolks with water.
5. 5
   Add vanilla and chopped nuts.
6. 6
   Beat egg whites until stiff and fold into batter.
7. 7
   Bake at 350° for about 25 minutes in 2 (10-inch) round pans, greased and floured.
8. 8
   Cool cake in inverted pans.
9. 9
   When cool, slice each layer in half and spread with Sweet Butter Custard Frosting.