The butter is allowed to soften and mix of foam with powdered sugar. Add egg yolks, one by one. Separately crushed cocoa with sugar, add the milk, put it to boil and leave to cool. From this mixture, pour a little oil to the cream while beating constantly until everything is over. In a cream put crushed finely biscuits, the walnuts (1 tbsp separately) and chopped fruits of sweet. Gently mix. Finally add the beaten egg whites to stiff. into the cake pan is placed only frame of a baking dish that sprinkle the inside with separated walnuts and pour it in half the cake mixture. Smoothed out rank are broken kisses on them and pour the other half. Equilibrated and allowed to solidify and then demolded. Decorate with whipped cream and fruit jam. In the middle can be sprinkled cocoa. Cut with a sharp knife, which is immersed in hot water.