Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
2         large         egg whites
1 1/2     cups          sugar
1/4       Teaspoon      cream of tartar
1/3       cup           water
1         Teaspoon      vanilla

Preparation:

Combine in top of double boiler over hot (not boiling) water. Beat with a rotary beater or hand-held electric mixer until mixture holds its shape (about 7 minutes). Fold in 1 tsp. vanilla. Frost cake when both cake and frosting have cooled.