Wash and drain the currants and, except for about 2 panicles for decoration, strip them from the stems
Stir the soft fat, vanillin sugar and sugar until light creamy. Stir in eggs bit by bit. Mix flour, cornstarch and baking powder and sieve. Stir in alternately with the milk. Carefully fold the currants into the dough with a dough scraper
Fill the dough into a greased springform pan (approx. 26 cm Ø) and smooth it down. Bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for about 1 hour. Cake may have to be baked in the last
Cover with aluminium foil for 20 minutes. Let the cake cool completely. Dust with icing sugar and decorate with remaining currants and possibly with some lemon balm