Beat the soft fat, 125 g sugar and vanillin sugar until creamy. Stir in the eggs one after the other. Mix flour and baking powder and stir in 2-3 tablespoons of cream briefly. Spread the dough into a greased, breadcrumbed, obscade form (approx. 27 cm Ø).
Bake in the preheated oven (electric oven: 200 °C/ gas: level 3) for 18-20 minutes. Leave the base to rest in the oven for approx. 10 minutes, then turn out of the tin and let it cool on a cake rack.
Coarsely chop the chocolate coating and melt it on a hot water bath. Coat the cake base with the chocolate coating and allow to dry. In the meantime wash the strawberries, drain well and clean them. Cut the strawberries into slices.
Whip the rest of the cream, vanilla sugar, remaining sugar and cream firmener until stiff. Finally add Cointreau and fold in briefly. Spread the cake base with half of the cream. Pour the rest of the cream into a piping bag with a star-shaped spout and spray a flower with 8 petals onto the cream layer.
Decorate the middle of the cake with a cream rosette. Line the petals with strawberries in scales. Warm the strawberry jam, pass it through a sieve and spread a thin layer on the strawberries. Serve decorated with balm leaves and half a strawberry.