Seven-Minute Icing
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Ingredients

2 egg whites
1-1/2 cups sugar
5 Tbsp water
1/4 teaspoon cream of tartar
1-1/2 tsp light corn syrup
1 tsp vanilla extract

Preparation

Off the heat, combine the egg whites, sugar, water, cream of tartar, and corn syrup in the top of a double boiler and mix until thoroughly blended. Place the top of the double boiler over rapidly boiling water and beat with a hand mixer or energetically with a wire whisk for 7 minutes. Add the vanilla and continue beating until the icing reaches a good consistency for spreading.

Note: Because of concerns over salmonella, some people use pasteurized meringue powder instead of fresh egg whites in any recipe where the eggs are uncooked or only partially cooked.