Irish Rag Cake
["1/2 lb. butter or margarine", "2 Tbsp. Crisco", "2 c. sugar", "5 egg yolks", "5 egg whites (make sure whites are separated from yolks)", "3 c. cake flour", "1 c. milk", "3 tsp. baking powder", "1 tsp. vanilla"]
["Mix this all together.", "Fold in beaten egg whites.", "Bake in a 13 x 9-inch pan at 350\u00b0 until done.", "Test with a toothpick inserted into the center."]
["butter", "Crisco", "sugar", "egg yolks", "egg whites", "cake flour", "milk", "baking powder", "vanilla"]