Chocolate Mousse

Place the chocolate and butter in the top of a double boiler on low heat. Slowly melt the chocolate, stirring constantly. Remove the chocolate from the heat, and gradually stir the mixture into the egg yolks, beating well. Let cool for about 10 minutes.

Using electric beaters, beat the egg whites until stiff. Stir the cognac into the chocolate and egg mixture, then gently fold this into the egg whites. There should be not white streaks visible. Pour mousse into 1 quart serving dish and refrigerate overnight. Before serving, beat heavy cream with powdered sugar, and place small dollop of cream on chilled mousse.