Mousse Au Chocolate

Yield:	6 Servings
Categories:	Chocolate, Desserts

4		Egg yolks
1/4	c	Superfine sugar
2	tb	Cognac
6	oz	Semisweet chocolate, cut in small chunks
3	tb	Strong coffee
8	tb	Butter; soft, unsalted or Sweet (1 stick) cut into 1/2" pieces
4		Egg whites
1/2	c	Heavy cream; whipped