Chocolate Mousse

6 oz. Semi-sweet chocolate
3 Tbls. butter
3 egg whites
¼ cup sugar
Pinch of cream of tartar
½ cup heavy cream
½ tsp. Vanilla
3 egg yolks

Melt chocolate and butter in double broiler. When melted, stir till smooth; set aside to cool slightly. Beat egg whites, sugar and cream of tartar till stiff peaks form; set aside.
Beat cream and vanilla till it forms fluffy peaks; set aside. Mix 3 egg yolks one at a time into the very warm chocolate. Fold the egg whites into the chocolate and mix till completely combined. Fold in the whipped cream and mix till completely combined. Put into serving dishes and chill 2 hours. Top with whipped cream in a pastry bag with a star tip, if you like. Shave chocolate over the top and serve with a fancy tube cookie.