Wash the cherries, drain well and stone them. Put the cherries on a sieve, drain and collect the juice
Cream fat and sugar with the whisk of the hand mixer. Separate the eggs and stir in the egg yolks one by one. Mix flour, baking powder, cocoa and cinnamon, sieve onto the fat-yolk cream and stir in briefly
Put the dough into a greased springform pan (26 cm Ø) sprinkled with flour and press it with a tablespoon to an even base. Spread the cherries on top and bake in the preheated oven, middle shelf (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 25 minutes
Sift the icing sugar. Beat egg whites until stiff, then add icing sugar by the spoonful and fold in. Add nuts and fold into the beaten egg white with a dough scraper. Remove the cake from the oven and spread the hazelnut meringue on the cherries. Put the cake back into the oven and bake for another 25 minutes
Remove the hot cake from the edge of the mould with a sharp knife. Let the cake cool down in the mould on a cake rack for approx. 3 hours
Fill up the collected cherry juice to 250 ml with the cherry nectar. Put the cake glaze powder into a small pot, add the cherry nectar little by little and stir until smooth with a wooden spoon. Bring to the boil while stirring, remove from the heat and leave to stand for about 1 minute. Remove the rim of the cake and spread the glaze on the cake with a tablespoon. Cool the glaze for about 1 hour and allow to set. Roast the hazelnut flakes in a pan without fat. Remove from the pan immediately and let it cool down. Sprinkle hazelnut flakes on the edges of the cake
waiting time approx. 4 hours