How did the cake, not photographed, because I was not going to put here. In General, the biscuit always do as already wrote earlier http://www.povarenok .ru/recipes/show/448 25/ Here it is I did.

Allow to cool and mince (I'm such leneveu, more like to do this in a food processor)

Butter, beat with condensed milk

Then biscuit crumbs, butter cream and cognac and stir, leaving some cream for decoration in the form of germs (although it did). The resulting mass is divided into pieces to make the potatoes and put in a cool place for 20-30 min. Then sprinkle the cocoa mixed with powdered sugar. That's all, fast and DELICIOUS!!! You are all invited to tea!!!