Mrs. Harter'S Icing
["4 egg whites", "1 c. granulated sugar", "2 c. Crisco", "1 lb. powdered sugar", "1 tsp. vanilla"]
["Mix together egg whites and granulated sugar.", "Beat over double boiler until thick and foamy (150\u00b0).", "Cool.", "Add Crisco, powdered sugar and vanilla.", "Beat until smooth."]
["egg whites", "sugar", "Crisco", "powdered sugar", "vanilla"]