White Mountain Frosting

Ingredients
- 2 large egg whites
- 1/2 cup white sugar
- 1/4 cup light corn syrup
- 2 tablespoons water
- 1 teaspoon vanilla
Directions
- In medium bowl, beat egg whites with electric mixer on high speed just until stiff peaks form.
- In 1-quart saucepan, stir sugar, corn syrup and water until well mixed.
- Cover and heat to rolling boil over medium heat.
- Uncover and boil 4 to 8 minutes, without stirring, to 242F on candy thermometer or until small amount of mixture dropped into cup of very cold water forms a firm ball that holds its shape until pressed. For an accurate temperature reading, tilt the saucepan slightly so mixture is deep enough for thermometer.
- Pour hot syrup very slowly in thin stream into egg whites, beating constantly on medium speed.
- Add vanilla.
- Beat on high speed about 10 minutes or until stiff peaks form.
- Frosts 13x9 inch cake generously, or fills and frosts an 8-or 9-inch two-layer cake.
Original source: relativetaste.net