Marshmallow Icing - cooking recipe

Ingredients

1 c. sugar
1/3 c. water
2 egg whites, stiffly beaten
1/3 tsp. cream of tartar
1 1/2 tsp. vanilla

Preparation

Boil sugar and water (I cook the sugar and water until it forms a hard ball when dropped into cold water.)
Add slowly to egg whites.
While still warm, add cream of tartar and vanilla. Beat until bowl is cool.