- 1 3/4 cups sugar
- 1/2 cup water
- 4 egg whites, room temperature
- 1/2 teaspoon cream of tartar
- 1 teaspoon vanilla extract
- In a saucepan, bring sugar and water to a boil. Boil for 3-4 minutes or until a candy thermometer reads 242 degrees F (firm-ball stage). Meanwhile, beat egg whites and cream of tartar in a mixing bowl until foamy. Slowly pour in hot sugar mixture; continue to beat on high for 7 minutes or until stiff peaks form. Add vanilla. Continue beating until frosting reaches desired consistency, about 2 minutes.