- 3 large egg whites
- 3/4 cup sugar
- Pinch of salt
- 1/3 cup water
- 1/4 teaspoon pure vanilla extract
In a heatproof bowl set over (not in) a saucepan of simmering water, combine 3 large egg whites, 3/4 cup sugar, a pinch salt and 1/3 cup water. Cook over medium, stirring constantly, until sugar has dissolved (or mixture registers 150 on an instant-read thermometer), 2 to 3 minutes. Transfer to a large bowl. Using an electric mixer, beat on medium-high until glossy, stiff peaks form (do not overbeat), about 3 minutes; reduce speed to low, add 1/4 teaspoon pure vanilla extract, and beat just until combined. Use immediately.