Tiramisu

Beat the Egg Yolks: In a large bowl, whisk the 4 egg yolks with half of the sugar (50g) until the mixture becomes pale yellow, thick, and ribbon-like (about 3-5 minutes). Gently fold in the softened mascarpone until perfectly smooth and lump-free.

Whip the Egg Whites: In a separate, impeccably clean glass or metal bowl, whisk the 4 egg whites until soft peaks form. Gradually add the remaining sugar (50g) and continue whisking until stiff, glossy peaks form.

Lighten the Cream: Gently fold the stiff egg whites into the mascarpone-yolk mixture in three additions, using a rubber spatula and a delicate sweeping motion to keep the mixture airy and light.

Soak and Layer: Quickly dip each ladyfinger into the cooled espresso for just 1-2 seconds per side (do not over-soak or they will turn to mush). Arrange a tight, single layer of soaked ladyfingers in the bottom of a 9x13 inch dish.

Build and Chill: Spread half of the mascarpone cream evenly over the first layer of ladyfingers. Repeat with a second layer of dipped ladyfingers, and top with the remaining mascarpone cream. Smooth the top with a spatula. Cover tightly and refrigerate for at least 6 hours, preferably overnight, to allow the flavors to meld and the dessert to set. Dust generously with cocoa powder just before serving.