Brew the espresso and let it cool down. In a large bowl, stir the egg yolks and sugar until frothy. Add the mascarpone and the grated dark chocolate and mix everything into a cream. To make it even more fluid, add amaretto. Soak 100 g of ladyfingers halfway in espresso and lay out the baking dish (approx. 15 cm).
Spread half of the egg yolk, sugar and mascarpone cream over the top so that the biscuits are completely covered. Now place another layer on the cream with the other half of the ladyfingers soaked in espresso. Finally spread the other half of the cream on top. It is best to put it in the refrigerator overnight.