Delicious Sour Cream Cake
["1/2 lb. butter", "3 c. sugar", "6 eggs, separated", "1 c. commercial sour cream", "3 c. cake flour", "1/2 tsp. salt", "1 tsp. baking powder", "1 tsp. vanilla"]
["Cream the butter and sugar thoroughly. Add beaten egg yolks. Add sour cream alternately with flour, salt and baking powder. (Add stiffly beaten egg whites after flour.)", "Bake at 375\u00b0 approximately 45 minutes or 1 hour or until done when tested with a straw. Bake in angel food pan.", "(Not necessary to ice, just a little sifted powdered sugar on top.)", "Delicious."]
["butter", "sugar", "eggs", "sour cream", "cake flour", "salt", "baking powder", "vanilla"]