Stir the fat until foamy and gradually add sugar, vanilla sugar, eggs and salt. Mix in the sifted flour, mixed with baking powder, alternately with the milk. Only use enough milk that the dough falls off the spoon with difficulty. Finally fold the washed, well-drained currants and raisins into the batter. Put it in a greased cup cake tin sprinkled with breadcrumbs. Bake at 175-195 degrees in a preheated oven for approx. 50-65 minutes.