Make a batter from butter, sugar, egg yolk, chocolate, cinnamon, flour, baking powder and nuts. Beat egg whites until stiff and fold in. Bake for 45 minutes at 150 degrees.
Bring the sour cherries to the boil with a little rum to taste and thicken with the cornstarch. Let cool and spread on the floor.
Prepare 1 packet of red wine cream according to the instructions on the packet and spread it on the cherries.