Coarsely chop 100 g chocolate and melt in a bowl on a warm water bath. Cream fat, sugar and vanilla sugar with the whisk of the hand mixer. Stir in the eggs one after the other. Stir in crème fraiche and chocolate. Mix flour, cocoa and baking powder and stir into the dough. Grease a box form (2 litres capacity) and dust with flour.
Add 1/3 of the dough and smooth it down. Place half of the biscuits close together. Cover with 1/3 of the dough and smooth it down. Place the remaining biscuits on top. Spread the remaining dough on top. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 60-65 minutes. Leave the cake to cool in the tin for 10 minutes. Then turn out onto a cake rack and let it cool down. For the icing, chop 100 g of chocolate and place in a pot with cream and coconut oil. Melt at low heat while stirring. Spread the icing, except for 2 tablespoons, over the cake. Chill for 10 minutes.
Then turn out onto a cake rack and let it cool down. For the icing, chop 100 g of chocolate and place in a pot with cream and coconut oil. Melt at low heat while stirring. Spread the icing, except for 2 tablespoons, over the cake. Chill for 10 minutes. Spoon the rest of the icing in strips diagonally over the cake. Chill for about 1 hour. Decorate cake with orange peel and mini biscuits
waiting time 3 hours