Chop the chocolate and melt over a warm water bath. Separate the eggs. Cream 150 g butter, 150 g sugar, vanilla sugar and salt with the whisk of the hand mixer. Stir in egg yolks one after the other.
Add melted, lukewarm chocolate at once and stir in. Mix flour, cocoa, ground almonds and baking powder and stir into the chocolate mixture. Beat the egg whites in a large (fat-free) bowl in 2 portions until stiff, adding 1 tablespoon of sugar at the end.
Carefully fold 2-3 portions of beaten egg white into the chocolate mixture.
Grease a springform pan (26 cm Ø) and dust with flour. Fill in the dough and smooth it down. Bake in the preheated oven, 2nd shelf from below (electric oven: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for 45-50 minutes.
Let the cake cool in the mould on a cake rack for about 3 hours.
Remove the cake from the tin and cut through horizontally 2 times. Place the bottom layer on a plate and sprinkle with orange juice. Mix jam and spread approx. 150 g on the bottom cake layer.
Cover with the second base and spread it with the caramel spread. Cover with the third base. Spread the remaining jam all around the cake. Let it dry for about 2 hours.
Chop the chocolate coating. Heat 125 g cream and coconut oil. Add couverture and melt in it while stirring. Immediately spread the cake with the chocolate cream all around and refrigerate for about 2 hours.
Coat aluminium foil thinly with oil. Caramelise 20 g sugar in a pot until golden brown, remove from the heat. Add 1 teaspoon butter and almonds, turn for about 1 minute and place on aluminium foil. Pull a little bit apart and let it cool down.
Quarter the orange slices. Whip 200 g cream and vanillin sugar until stiff. Put into a piping bag with a large star-shaped spout and squirt 10 cream tuffs onto the cake. Drizzle some caramel sauce over each tuff and decorate with a slice of orange and caramel almonds.