Beat the fat, sugar and vanillin sugar in a mixing bowl with the whisks of the hand mixer until foamy. Add eggs bit by bit and stir in. Add lemon zest and juice and crème fraîche.
Add 200 g flour, cornstarch and baking powder and stir in. Mix the remaining flour, fruit, raisins and chocolate drops, add and fold everything in with a dough scraper. Grease a box cake tin (30 cm long).
Pour in the dough. Bake in the preheated oven (electric cooker: 175 °C/ gas: level 2) for about 1 1/2 hours. Remove the cake from the tin and let it cool down on a cake rack. Dust with icing sugar.
Results in about 15 pieces.