Beat the butter, sugar, vanilla sugar and egg yolks until frothy. Alternately fold in the flour, baking powder and milk. Bake at 160 ° C. The dough must still be light yellow.
Prepare the pudding and pour over the batter. Immediately put the currants on top. Prepare a snow from the egg whites and sugar and spread it on the fruit. Bake again at 160 ° C until the snow is light brown.