Warming beer. Chop chocolate. Melt butter and couverture in the beer, stir in honey, let cool down for about 20 minutes. Mix cocoa, sugar, vanilla sugar and lemon peel. Gradually stir in the beer mixture and buttermilk.
Mix flour, salt and baking powder, stir briefly with the beer-butter milk mixture. Add eggs and stir in.
Place the cherries in a sieve and drain. Carefully fold into the dough. Grease a springform pan (20 cm) and fill in the dough. In a preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: see
manufacturer) bake for about 50 minutes. Remove the cake from the oven, let it cool down on a cake rack and remove from the tin.
Roughly chop the hazelnut pastry. Whip cream until stiff and spread on the cake. Add the pastry pieces and cut the cake into pieces.