Try this Torta di compleanno recipe, or contribute your own.
A proper Torta di Compleanno yields a dense, fragrant crumb saturated with lemon zest, layered cleanly beneath a dense, smooth frosting of sheep's milk ricotta and mascarpone. Achieving this structure requires incorporating air into the whole eggs and sugar until the mixture leaves a ribbon trail on the surface before adding the dry goods. Without this initial aeration, the substantial weight of the flour and leavening agent will deflate the batter entirely during baking at 180 degrees Celsius.
Baking the layers ahead simplifies the process considerably. Chilling the baked sponges wrapped tightly in foil overnight firms the crumb, making it vastly easier to level with a serrated knife without generating excessive crumbs that muddy the final frosting. Room temperature cakes will tear and crumble under the pressure of the spatula, complicating the assembly phase.
Equipment constraints in smaller cooking spaces need not halt production. Two 15-centimeter round pans fit simultaneously in compact ovens, but single-pan bakers can divide the batter and bake sequentially provided the second half remains covered at room temperature. Ensure the dairy components are fully chilled before whipping to maintain the stability of the mascarpone and ricotta emulsion.
Holding the assembled dessert in the refrigerator for at least three hours before slicing allows the dairy fats to firm up and bond the layers together. Fresh fruit added to the surface should be applied just prior to serving to prevent excess moisture from weeping into the underlying cream.