1
Recommendation: make the cream first (boil the cream and put the chocolate in it) and then cool it while you make, bake and cool the sponge cake. Then, before filling, whip the cream and combine the two whipped creams together.
2
Preheat the oven to 180 degrees. Whisk the egg yolks, butter and half of the sugar until foamy. Whisk the egg whites with the remaining sugar until stiff. Gently fold into the egg yolk mixture.
3
Sift the flour, cocoa and baking powder mixture over the egg mixture (first mix these ingredients together, then sift them over the egg mixture).
4
Line the cake tin with baking paper. Pour the batter into the cake tin. Bake for 30 - 35 minutes. Turn the baked sponge cake upside down and cool.
5
Bring 200 ml of sweet cream to the boil, add the chopped chocolate and stir to dissolve. Cool the cream. Whip the cooled cream until it is light and frothy and add 400 ml of whipped sweet cream.
6
Cut the cooled sponge cake into three layers. Soak each layer with a cooled sugar and rum solution made by bringing the sugar and water and a piece of orange peel to the boil to dissolve the sugar, cooling and stirring in a little rum. Dilute with water to make it suitably sweet. Spread a third of the cream on each layer.
7
After the third layer of sponge cake has been placed, spread the remaining cream over the entire surface of the cake, including the sides. Place the cake in the fridge for a few hours to set the cream. Decorate as desired.