Marshmallow Frosting
["2 egg whites", "Pinch of salt", "1/4 cup sugar", "3/4 cup white Karo syrup", "1 tsp. vanilla", "1/2 tsp. cream of tartar"]
["Beat egg whites until frothy. Add salt, sugar and cream of tartar.", "Beat to blend. Add Karo syrup and vanilla. Beat until mixture stands in peaks."]
["egg whites", "salt", "sugar", "white Karo syrup", "vanilla", "cream of tartar"]