2 eggs, separated
1/4 tsp. cream of tartar
1 1/2 c. sugar (divided into 1 c. & 1/2 c.)
2 1/4 c. cake flour
3 tsp. baking powder
1 tsp. salt
1/3 c. vegetable oil
1 1/4 tsp. vanilla or other flavoring, if desired
1 1/2 c. milk (divided into 1 c. & 1/2 c.)

Beat egg whites until soft peaks form. Gradually add, while continually beating, cream of tartar and 1/2 cup sugar. Beat until very stiff and glossy. Set aside.

Sift into large bowl flour, baking powder and salt and 1 cup sugar. Add oil, 1/2 cup milk and flavoring. Beat 1 minute at medium speed. Add 1/2 cup milk and egg yolks. Beat 1 minute, scraping bowl constantly.

Fold egg whites in gently, but thoroughly. Turn into greased and floured pans (two 8 inch or one 9 x 13 inch or cupcake). Bake at 350 degrees for about 30 minutes for layer pans - 45 minutes for sheet cake - less time for cupcakes.