For the storm tiramisu, beat 4 yolks with 100 g sugar until foamy. Then add the mascarpone. Beat the 4 egg whites with 20 g sugar and fold in.
In a suitable mold put a layer of biscuits dipped in storm, then a layer of cream on top, then again biscuits and cream.
Finish with a layer of cream. Sprinkle with cocoa powder and put in the refrigerator for 3-4 hours.