Espresso Chocolate Sauce

Serve this over ice cream.

1/3 cup strong coffee
2 (1 ounce) squares unsweetened chocolate
1/2 cup granulated sugar
3 tablespoons butter or margarine
1/4 teaspoon vanilla extract

In a saucepan over low heat, cook and stir coffee and chocolate until chocolate is melted. Add sugar and butter; cook and stir until the sugar is dissolved and the butter is melted. Remove from the heat; stir in vanilla extract.

Yields 1 cup.