Beat the fat, 250 g sugar, 1 packet of vanillin sugar and salt until fluffy. Stir in the eggs one by one. Sieve flour, cocoa and baking powder and stir in briefly with milk. Spread the dough evenly on a greased, breadcrumbed pan of the oven (approx. 32x38 cm). Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 30-35 minutes.
Let them cool down. Turn out the base onto a plate. Mix coffee and brandy and drizzle onto the base. Let stand for 1 hour. Mix mascarpone, quark, 2 packets of vanilla sugar and 50 g sugar with the whisks of the hand mixer. Spread the cream evenly on the base. Cover the surface with chocolate bars. Chop the chocolate coating and melt with 1 teaspoon of fat over a warm water bath. Put the couverture in a freezer bag and cut off a corner. Decorate the cake with mocha beans and couverture.
Spread the cream evenly on the base. Cover the surface with chocolate bars. Chop the chocolate coating and melt with 1 teaspoon of fat over a warm water bath. Put the couverture in a freezer bag and cut off a corner. Decorate the cake with mocha beans and couverture. Dust with cocoa as desired. Cut into 12 pieces and serve
waiting time approx. 3 hours