Ingredients

3 large egg whites 

1 1/4 cups sugar 

5 tablespoons cold water 

1/4 teaspoon cream of tartar 

1 teaspoon vanilla extract 

Preparation

Combine egg whites, sugar, water, and cream of tartar in a medium metal bowl. Set over a pot of rapidly boiling water, and beat constantly for 7 minutes.

Remove from heat, add vanilla, and continue beating until glossy and stiff enough to spread. Use immediately.