1/2 c. butter
4 sq. unsweetened chocolate
3 c. sugar
1/2 tsp. salt
1 can Pet evaporated milk

Melt 1/2 cup butter in top of double boiler. Add 4 squares of unsweetened chocolate and let melt. Add 3 cups sugar, 1/4 cup at a time, stirring slowly. Add 1/2 teaspoon salt. Slowly stir in 1 can evaporated milk. Cook until slightly thick. Store in jar in refrigerator. Serve on ice cream. Tastes like real Dairy Queen chocolate.