1 1/3 c. (15 oz.) can sweetened milk, divided
1 c. light corn syrup
1 tbsp. butter
1/8 tsp. salt
2 sqs. or 2 oz. unsweetened chocolate
1 tsp. vanilla

In a 1 1/2 quart saucepan mix 1/3 cup sweetened milk, light corn syrup, butter and salt. Cook over medium heat, stirring constantly to 235 degrees. Stir in remaining sweetened milk and chocolate, one at a time, boil until syrup temperature reaches 235 degrees again. Remove from heat. Stir in vanilla. Pour into 8 x 8 x 2 inch buttered pan.