Seven Minute Frosting
["2 egg whites", "1 1/2 c. sugar", "1 1/2 tsp. light corn syrup or 1/4 tsp. cream of tartar", "1/3 c. cold water", "dash of salt", "1 tsp. vanilla extract"]
["Place all ingredients except vanilla extract in a double boiler; mix thoroughly.", "Cook, beating constantly with rotary or electric mixer until mixture forms peaks, about seven minutes. Remove from heat; add vanilla.", "Beat until spreading consistency."]
["egg whites", "sugar", "light corn syrup", "cold water", "salt", "vanilla extract"]