Jill'S White Icing
["2/3 c. shortening", "2/3 to 3/4 box powdered sugar (3 to 3 1/2)", "2 egg whites", "1/2 tsp. vanilla"]
["Beat egg whites until stiff;", "add sugar, shortening and vanilla alternately.", "Covers one cake.", "Very good."]
["shortening", "powdered sugar", "egg whites", "vanilla"]