Bread is naronva crumbs or grind with a robot. To it was added cocoa, sugar, milk, essence and mix well. To this mixture was added at room temperature macerate butter and stirred with a wooden spoon. When the mixture begins to collect a ball interfere with hands. The finished mixture is spread on aluminum foil in a square or rectangle 1 cm thick. Wind up in fthe oil and leave in the fridge for half an hour to set. Then developed and smeared with a mixture of soft butter and jam, turn back and leave in the refrigerator to set. Decorate optional with melted chocolate or icing sugar.