2 1/4 c. sifted cake flour
1 1/2 c. sugar
3 tsp. baking powder
1 tsp. salt
1/2 c. salad oil
3/4 c. egg yolks, about 8
3/4 c. orange juice
1 c. egg whites, about 8
1/2 tsp. cream of tartar

Sift flour, sugar, baking powder, and salt together into bowl. Make well in center. Add in order: oil, egg yolks, and juice. Beat until satin smooth. Beat egg whites with cream of tartar to VERY STIFF peaks. Pour batter in thin stream evenly over entire surface of egg whites; fold in gently. Bake in ungreased 10 inch tube pan at 325 degrees about 55 minutes. Invert pan; cool. Frost.