Mix the ingredients butter to almonds into a batter. Bake in a greased springform pan (26 cm) at 175 ° C for 30 minutes on the 2nd rail from the bottom.
In the meantime, beat 3 egg yolks with sugar and cinnamon until frothy, stir in the sour cream. Beat 3 egg whites with salt until stiff and fold in.
Put the prepared currants on the hot cake.
Spread the topping over it, bake for another 30 minutes.