Finely grate the chocolate. Cream fat, 160 g sugar, vanillin sugar and salt with the whisk of the hand mixer. Separate the eggs and stir in the egg yolks. Add chocolate, hazelnuts, rum and baking powder and stir in. Beat the egg white until stiff in portions and gradually fold into the nut mixture. Line the fat pan with baking paper.
Pour in the dough, smooth it down and bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 45 minutes. Take out of the oven and let cool down on a grid. Cut the base in half crosswise and remove the baking paper. Place a base on a plate and surround with a frame. In the meantime, soak the gelatine. Sort the raspberries. Stir yoghurt, 75 g sugar, lemon zest and juice until smooth. Dissolve squeezed out gelatine at low heat and stir in some yoghurt. Mix the lukewarm gelatine with the rest of the yoghurt and chill. Whip 250 g cream until stiff. As soon as the cream begins to set, fold in the cream and 150 g raspberries.
Sort the raspberries. Stir yoghurt, 75 g sugar, lemon zest and juice until smooth. Dissolve squeezed out gelatine at low heat and stir in some yoghurt. Mix the lukewarm gelatine with the rest of the yoghurt and chill. Whip 250 g cream until stiff. As soon as the cream begins to set, fold in the cream and 150 g raspberries. Smooth the cream on the base and cover with the 2nd base. Chill for at least 4 hours. Dust the cake with icing sugar and cut into 12 pieces. Whip 150 g cream until stiff and fill into a piping bag with punched spout. Spray cream waves onto the pieces and decorate with remaining raspberries
Smooth the cream on the base and cover with the 2nd base. Chill for at least 4 hours. Dust the cake with icing sugar and cut into 12 pieces. Whip 150 g cream until stiff and fill into a piping bag with punched spout. Spray cream waves onto the pieces and decorate with remaining raspberries