How To make Heavenly Topping

1/2 c Butter
4 oz Unsweetened chocolate
3 c Sugar
1 cn Pet milk
Melt butter and chocolate in top of double boiler. Stir in sugar gradually about 4 tbsp. at a time. Add milk slowly. Cook until smooth and satiny. Heat as need to pour over ice cream, pound cake, etc. Stores well in refrigerator for a long period of time.