Sponge Cake - cooking recipe

Ingredients

4 egg yolks
1 c. sugar
1/2 c. orange juice
1 tsp. baking powder
1 c. flour
4 stiffly beaten egg whites

Preparation

Beat egg yolks and sugar until all sugar is melted (3 to 5 minutes).
Add orange juice and beat 2 minutes.
Mix baking powder with flour; add to mixture and beat 2 minutes.
Fold in stiffly beaten egg whites.
Bake in ungreased tube pan or square cake pan at 350\u00b0.
Bake for 35 to 40 minutes.