Boiled Frosting - cooking recipe

Ingredients

2 c. sugar
3/4 c. water
1 Tbsp. light corn syrup or 1/4 tsp. cream of tartar
dash of salt
2 stiffly beaten egg whites
1 tsp. vanilla

Preparation

Cook first 4 ingredients over low heat, stirring until sugar dissolves.
Cover pan 2 to 3 minutes to dissolve sugar crystals on side of pan.
Uncover; cook to soft ball stage (240\u00b0).
Gradually add hot syrup to egg whites, beating constantly with electric mixer.
Add vanilla; beat until spreading consistency, about 6 minutes.
If too thin, let stand 3 minutes to set up slightly. Stir once or twice.
Frosts two 8 or 9-inch layers.