Put the lady fingers and biscuits in a freezer bag. Run the cake roll over them and crumble finely. Melt the butter and stir into the crumb mixture with the cocoa. Fill it onto the bottom of a springform pan (26 cm Ø) and press it down firmly with your hands. Chill for 30 minutes. Cream eggs and 200 g sugar. Add cream cheese, pudding powder, flour, lemon peel, orange fruit and cream and stir in.
Pour the cheese mixture onto the crumbly dough. Bake in the preheated oven (electric cooker: 175 °C/ gas: level 2) for about 1 hour. Let the cake cool down on a cake rack for 10 minutes. Mix crème fraîche and remaining sugar, spread on the cake and bake at the same temperature for another 10 minutes. Leave the cake to cool in the tin. Results in about 16 pieces