Pour the cherries onto a sieve and drain. Cream fat, salt, sugar and vanilla sugar. Stir in the eggs one after the other. Mix flour, baking powder and cocoa, sieve over them and stir in briefly with the milk. Grease the oven pan (32 x 39 cm) and dust with flour. Put the dough on top and smooth it down. Spread cherries evenly on top.
Bake the cake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 35-40 minutes. Remove from the oven and allow to cool on a cake rack. In the meantime, roughly chop the chocolate coating and melt separately on a warm water bath. Pour into 1 freezer bag each and cut off a small corner each. Spray strips onto the cake. Cut the cake into about 16 triangles and serve decorated with icing sugar