Separate eggs. Beat the egg whites and 5 tbsp. water until stiff, add 150 g sugar. Beat the egg yolks separately. Sieve flour, 75 g starch, cocoa and baking powder and fold in. Pour into a springform pan (26 cm Ø) greased at the bottom. Bake in a hot oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for about 30 minutes
Drain the cherries, collect the juice. Stir 30 g starch and 100 ml juice until smooth. Boil up the rest of the juice and 30 g sugar. Bind with starch. Stir in cherries. Cool down
Mix mascarpone, vanillin sugar and 60 g sugar. Whip the cream and cream firmer until stiff, fold in
Cut the biscuit twice. Place the edge of the mould around the lower base. Put about 1/4 cherries in the middle (about 10 cm Ø) and spread about 1/3 of the cream around it. Cover with 2nd base. Spread some cream in the middle and the rest of the cherries around it. Cover with the 3rd base. Spread with the rest of the cream. Put it in a cold place. Melt the couverture. Decorate the cake. Cool for 2 hours.