Amanda`s Angel Food Cake

11 each Egg white

1 1/2 cups Sugar

1 cup Flour

1 teaspoon Cream of tartar

1/8 teaspoon Salt

1 teaspoon Vanilla

Sift the dry ingredients together 4 times. Beat the egg whites until dry. Fold dry ingredients into eggs. Add flavoring and bake at 250-F for 1 hour. This cake should be baked in an ungreased angel food pan. Source: Pennsylvania Dutch Cook Book - Fine Old Recipes, Culinary Arts Press, 1936.