2 c. white sugar
2/3 c. milk
1/3 c. cocoa
2 tbsp. corn syrup
1/4 tsp. salt
2 tbsp. butter
1 tsp. vanilla extract

Bring first 5 ingredients to soft-ball stage. Remove from heat and add 2 tablespoons butter. Do not stir. Cool until lukewarm. Add 1 teaspoon vanilla extract and beat. Pour into buttered pan.