Sunshine Sponge Cake

Directions

1. 1
   Sift together cake flour, baking powder and salt. Set aside.
2. 2
   With electric mixer, beat egg yolks until slightly thickened; add hot water gradually, beating until mixture is very thick and light (about 10 minutes).
3. 3
   Add flavoring to egg yolks, then add sugar gradually, beating constantly.
4. 4
   Fold in flour, about a fourth at a time (I do this by hand) folding until well blended.
5. 5
   Pour batter into an ungreased 10-inch tube pan.
6. 6
   Bake at 375°F for 40-50 minutes until done.
7. 7
   Remove cake from oven and invert pan.
8. 8
   Let cake stand for an hour until cool.