Drain the cherries on a sieve. Cream butter, vanillin sugar and 250 g sugar with the whisk of the hand mixer. Stir in the eggs one by one. Mix flour and baking powder and stir into the dough alternately with the 5 tbsp. milk. Spread half of the dough on the greased, floured fat pan of the oven (32 x 39 cm). Stir 1 tbsp. milk and cocoa into the other half and spread on the light-coloured dough. Spread the cherries on the cake
Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 25 minutes. Take the cake out of the oven and let it cool down
Whip 250 g cream with the whisk of the hand mixer until stiff, adding 50 g sugar. Stir the sour cream and 4 tablespoons of cream until smooth. Soak the gelatine in cold water, squeeze it out and dissolve it in a pot at low heat. Stir in 3 tbsp. sour cream. Stir into the remaining sour cream. Fold cream into the sour cream and spread on the cake. Make waves with a damp, hot tablespoon. Mix cinnamon and 5 tbsp. sugar, sprinkle on the cake, cut into pieces