Seven-Minute Frosting

Combine all ingredients except the vanilla in top of double boiler.

Beat 1 minute to blend, then place over boiling water and beat with a sturdy egg beater or at high speed of electric mixer for 7 minutes or until stiff peaks will form.

(Stir frosting up from bottom and sides of pan occasionally.)

Fold in vanilla. Makes enough to frost two 9-inch layers or a 10-inch tube cake or 13 x 9 x 2-inch cake.