Pour the full cream into a mixing bowl. Add the vanilla sugar and the seeds of a vanilla pod.
Beat the cream. It must remain smooth to finish the cake properly.
Rinse the strawberries from Hoogstraten and remove the crowns.
Cut the biscuit in 2 or 3 equal parts. You can choose this yourself depending on the thickness of the biscuit. A handy trick to cut a biscuit into 3 slices: Prick a toothpick at ⅓ and ⅔ of the height in the edge of the cake. Turn the cake a quarter turn and do it again, until you have pierced a pair of toothpicks in 4 places.
Use a serrated knife. The toothpicks serve as a marker for your carving.
Set the 2 upper biscuit discs aside.
On the bottom disk you spread a thin layer of strawberry jam.
Spread a layer of whipped cream on top of the jam.
Cut the strawberries into small slices and place them on top of the whipped cream.
Then you place the 2nd layer of sponge cake and repeat the above 3 steps: the jam, whipped cream and strawberries on the sponge cake.
Place the last layer of biscuit on top.
Spread the whipped cream over the entire cake: the top and sides of the cake can be completely covered with whipped cream.
Put the remaining cream in a piping bag.
You can finish the cake as you prefer personally. I have placed toppings of whipped cream alternating with half a strawberry on top of the cake. Finally I grated the chocolate and sprinkled it on the cake.