White Icing - cooking recipe

Ingredients

4 egg whites
2 c. sugar
1/2 c. water
1 Tbsp. vinegar
1 tsp. vanilla

Preparation

Beat 4 egg whites until stiff in a bowl.
In a pan, put 2 cups sugar and 1/2 cup water; bring to a boil.
Add 1 tablespoon vinegar.
Boil until it spins a 3 to 4 inch thread.
Beat egg whites while pouring hot sugar syrup over them, then beat in 1 teaspoon vanilla.
Beat until cool.
Spread over cake.