Orange Sponge Cake - cooking recipe

Ingredients

6 egg yolks
1 Tbsp. grated orange peel
1/2 c. orange juice
1 c. sugar
1/4 tsp. salt
1 1/3 c. sifted cake flour (Softasilk Cake Flour)
6 egg whites
1 tsp. cream of tartar
1/2 c. sugar

Preparation

Beat egg yolks until thick and lemon-colored.
Add orange peel and orange juice.
Beat until very thick.
Gradually beat in 1 cup sugar and 1/4 teaspoon salt.
Fold in flour a little at a time.
Beat egg whites with the cream of tartar until soft peaks form.
Gradually add 1/2 cup sugar beating until soft peaks form. Thoroughly fold whites into yolk mixture.
Bake in ungreased 10-inch tube pan in slow oven (325\u00b0) about 55 minutes or until done.
Invert pan to cool.