• Beat the egg yolks with the sugar until white, then add the mascarpone cheese and mix well.
  • Whisk the egg whites until fluffy and gently fold them into the yolk-mascarpone mixture.
  • It is most convenient to layer the cake in a rectangular tin. Dip the ladyfingers (one at a time, not all at once) briefly in cold coffee and place them side by side in the cake tin. Lay out the whole layer. Then add a layer of cream, add another layer of ladyfingers on top of the cream. Place the layered cake in the refrigerator for at least 3 hours, preferably overnight.
  • Sprinkle cocoa on top before serving.