This is a very old recipe that belonged to my grandmother. I hope that you like it.
1 Preheat oven to 350 degrees F (175 degrees C). Lightly grease two 9 inch layer cake pans.
2 Cream the shortening, add the sugar gradually.
3 Sift the flour, baking powder, cream of tartar, and salt. Add the flour mixture alternately with the milk to the creamed mixture.
4 Beat the egg whites until stiff peaks are formed. Fold the beaten egg whites and the vanilla into the cake batter. Pour batter into the prepared pans.
5 Bake at 350 degrees F (175 degrees C) for 30 minutes.