Drain the cherries well in a sieve. Roughly chop the chocolate. 325 g flour, baking powder, 150 g sugar, vanillin sugar, salt, eggs, oil,
Cut the dough in half. Dust cherries with 25 g flour. Stir cocoa and 25 g sugar into one piece of dough. Fold in chocolate. Fold half of the cherries into the light-coloured dough, the rest cherries and fold into the dark dough.
First fill the light dough, then the dark dough into a well greased springform pan (26 cm Ø) with a tube bottom insert. Marble the dough with a fork. Bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 1 hour.
Remove from the oven, place on a grid and leave to cool in the mould for about 30 minutes. Remove from the mould and allow to cool on the grid. Dust with icing sugar and serve on a plate decorated with mint and cherries as desired.