Hot Sunday Sauce

1 ½ c. evaporated milk
2 c. sugar
4 sq. unsweetened chocolate
½ tsp. salt
¼ butter
1 tsp. vanilla

Heat mild and sugar to boiling, stirring all the time. Boil 1 minute. Add chocolate and salt. Stir until chocolate melts and then beat until smooth. Remove from heat. Stir in butter and vanilla. Serve hot or cold. Makes about 3 cups.