Makes one 9 inch layer cake
sifted cake flour
Grease bottom of two 9+1 1/2 round layer cake pans and line the pans with wax paper. Grease and flour the paper.
Combine flour,sugar, baking powder, salt, shortening, 3/4 cups of milk and the vanilla in a large bowl.
Beat at low speed with electric mixer until blended, then beat at high speed for 2 minutes. Add the remaining 1/2 cup of milk and the egg whites,
Continue beating at high speed 2 minutes longer, scraping down side of bowl often. Pour the cake batter into the prepared pans.
Bake in 350 degree oven for 30 minutes, or until cake tests done.
Cool layers in pans on wire racks for 10 minutes, loosen around edges with a knife : turn out onto wire racks and remove waxed paper.
Cool completely, fill and frost as desired. Makes one 9 inch double-layer cake.