Sort the currants, wash them. Strip the fruit from the stalks with a fork, except for a few panicles for decoration. For the dough, mix 250 g soft fat, 250 g sugar and 1 packet of vanilla sugar until foamy.
Stir in 2 eggs one after the other. Mix flour and baking powder, stir in by the spoonful. Finally add the milk. Spread the dough on the greased fat pan of the oven. For the icing, stir the remaining fat, 100 g sugar and vanillin sugar until foamy.
Stir in the remaining eggs. Add custard powder, lemon juice and zest. Finally, stir in the curd and crème fraiche. Spread the icing on the sponge mixture. Sprinkle 2/3 of the currants on each. Bake in the preheated oven (electric: 200 °C/ gas: level 3) for about 35 minutes.
Let the cake cool down. Select the raspberries and blackberries, wash and drain well. Sprinkle the cake with the remaining currants. Dust with icing sugar. Serve the cake decorated with redcurrants rolled in the remaining sugar and mint leaves.
Results in about 25 pieces.