4 ounces semisweet chocolate
1 tablespoon unsalted butter
1/4 teaspoon vanilla
2 tablespoons sugar
3/4 cup whipping cream

4 ounces semisweet chocolate 1 tablespoon unsalted butter 1/4 teaspoon vanilla 2 tablespoons sugar 3/4 cup whipping cream

Melt chocolate in the top of a double boiler over barely simmering water
Stir until smooth
Cut butter into small pieces
whisk into chocolate until melted
Stir in vanilla and sugar
Remove pan from hot water
Let cool slightly while whipping cream until stiff
Stir about a half cup whipping cream into chocolate, then fold mixture into remaining whipped cream
Refrigerate mixture about one hour
Makes about one and 3/4 cups