Soften the mascarpone cheese until smooth.
Mix the egg yolks and sugar well.
Combine the mascarpone cheese with the egg mixture.
Whip the heavy cream and fold it into the cheese mixture.
Dip ladyfinger cookies in espresso.
Layer soaked cookies in a dish and spread the cheese cream on top.
Repeat layering cookies and cream.
Dust cocoa powder over the final layer.
Refrigerate for 2-3 hours until set.