Ingredients
2 large egg whites
1 1/2 cups sugar
2 teaspoons light corn syrup
1/4 teaspoon cream of tartar
1/2 teaspoon pure vanilla extract
Preparation
Combine egg whites, sugar, corn syrup, and cream of tartar with 5 tablespoons cold water in top of a double boiler. Fill bottom of double boiler with two to three inches water; top pan should not touch water. With water boiling vigorously, beat egg mixture using a hand mixer on medium low 4 minutes, then high 3 to 4 minutes. Remove from heat. Add vanilla; continue to beat until icing holds its peaks, 3 to 5 minutes more; do not overmix or icing can get grainy.