Coconut Fluff Cake
["3 cups cake flour", "2 tsp. baking powder", "1/4 tsp. salt", "1 cup butter", "1 box powdered sugar", "4 egg whites, beaten stiffly", "1 1/4 cup milk", "4 egg yolks beaten well", "1 tsp. vanilla", "1 cup grated coconut"]
["Sift dry ingredients 3 times.", "Cream butter and add sugar gradually.", "Add beaten egg yolks.", "Add flour alternatively with milk, small amounts at a time.", "Add vanilla and coconut.", "Fold in egg whites quickly and thoroughly.", "Pour into prepared cake pan and bake at 375 degrees 20-30 minutes."]
["cake flour", "baking powder", "salt", "butter", "powdered sugar", "egg whites", "milk", "egg yolks", "vanilla", "grated coconut"]