* The mascarpone cheese should be whipped until fluffy. Grate the bitter chocolate square. In a shallow bowl, mix together coffee, cognac and half of the amaretto. Dip each Savoyarde biscuit in the coffee mixture and immediately place in a 3 litre rectangular baking dish (13 x 9 inch) sugar side up. Reserve leftover espresso mixture. A layer of coffee dipped biscuits should cover the bottom of dish. Beat egg whites until they hold peaks; set aside. Beat egg yolks until lemon-coloured. Gradually add sugar and continue beating until all of the sugar has been incorporated. Add the mascarpone cheese. Stir in grated chocolate and remainder of the amaretto. Gently fold in stiffly beaten egg whites. Spoon the mixture over the Savoyarde biscuits. Dip the amaretto biscuits in the espresso mixture and place them on the cheese mixture. Serve chilled. Serves 14. -