- 2 cups white sugar
- 1 cup water
- 1 pinch salt
- 1 teaspoon distilled white vinegar
- 2 egg whites
- 3/4 teaspoon vanilla extract
- Combine sugar, water, salt, and vinegar in a saucepan. Cook and stir over medium heat just until clear. Then cook without stirring until syrup spins a long thread when dropped from tip of spoon, or to 240 degrees F (115 degrees C).
- Beat egg whites until soft peaks form. Add syrup in a very thin stream, beating constantly. After all syrup is added, continue beating until frosting will hold its shape. Mix in vanilla.