Sponge Cake - cooking recipe

Ingredients

6 egg yolks
1/2 c. cold water
1 1/2 c. sugar
1 tsp. vanilla
1 1/2 c. sifted flour
1/4 tsp. salt
6 egg whites
3/4 tsp. cream of tartar

Preparation

Preheat oven to 325\u00b0.
Beat egg yolks until thick and lemon colored.
Add water; continue beating until very thick.
Gradually beat in sugar, then vanilla.
Sift flour 3 times; fold in egg mixture, a little at a time.
In another bowl, beat egg whites until foamy.
Add cream of tartar; beat until they form moist, glossy peaks.
Fold into first mixture, turning bowl gradually. Bake in ungreased tube pan at 325\u00b0 for about 1 hour.