Eggs are broken sugar warm to graying (over container with boiling water, but the bottom of the bowl does not touch the water). Add the chocolate, the butter, vanilla and broken in small pieces biscuits. All mix well and pour into baking dish, covered with baking paper and spread with butter. The mixture is smoothed and dusted with chopped walnuts and grated chocolate. Allow to stand for 24 hours in the cold and cut into pieces optional.