Combine all ingredients, except vanilla in top part of double boiler. Beat about 1 minute to mix thoroughly. Then put over boiling water and beat constantly with rotary or electric beater for 7 minutes, or until frosting will stand in stiff peaks. (Stir frosting up from bottom of pan occasionally.) Remove from over boiling water and add vanilla. Beat until of proper spreading consistency. Makes 5 1/3 cups.
Ingredients
1 1/2 c Sugar
1/3 c -water
1/4 ts Salt
2 Egg whites
1 1/2 ts Light corn syrup
1 ts Vanilla extract