Construct a sandwich-like interior by spreading fig marmalade between two layers of génoise with Parmigiano Reggiano.
Freeze.
Add a layer of brie and truffle and freeze again.
Construct the entremets: pour 350 g of dark chocolate mousse into a silicone eclipse mould.
Add the interior, followed by another 20 g of chocolate mousse.
Finish with the hazelnut crunch.
Remove the entremets from the mould and cover with the dark piping mixture.