Boiled Icing - cooking recipe

Ingredients

1 1/2 c. sugar
1/2 c. cold water
1 Tbsp. light corn syrup or 1/4 tsp. cream of tartar
2 egg whites
1 tsp. vanilla extract

Preparation

Break egg whites into mixing bowl.
Put sugar, water and corn syrup into a small saucepan; stir over low heat until sugar dissolves.
Boil rapidly until the syrup can be formed into soft ball when
a little is dropped into cold water (238\u00b0).
Remove from stove.
Beat egg whites quickly until stiff.
Continue beating, while pouring the hot syrup in a fine stream over the egg whites.
Add flavoring and continue beating until the mixture is stiff enough to spread on cake.