Meanwhile, in double boiler top or bowl, combine egg white, sugar, 2 tablespoons water, and cream of tartar. Beat with a portable mixer until blended. Nest over boiling water; immediately reduce heat to maintain a gentle simmer. With mixer on medium speed, beat icing until it holds peaks that curve slightly, 5 to 7 minutes (overcooked, the icing gets grainy).
This recipe yields 2 cups.
Yield: 2 cups