Polenta e osei dolce

In 1910, Alessio Amadeo and his wife Giuseppina — founders of the Pasticceria Milanese on Via Roma in Bergamo, established in 1907 — invented this pastry as a confectioner's transposition of the classic savory polenta e osei: roasted small birds served on a bed of polenta, a dish that writers including Stendhal had praised as a symbol of Bergamo's culinary character. Amadeo used yellow marzipan and crystalline sugar to recreate polenta's color and granular texture, and chocolate marzipan birds to stand in for the roasted songbirds. In the 1930s, Amadeo's grandson Amedeo — dressed as Gioppino, Bergamo's carnival mask — was said to present the cake to opposing football captains before Atalanta matches. The dessert fell into relative obscurity before being revived in the 1950s by Pasticceria Balzer, which restored it to Bergamo's shop windows as a Sunday symbol. It is widely considered a forerunner of modern cake design.

Airy sponge soaked in orange liqueur dissolves almost instantly, yielding to a dense ribbon of chocolate-hazelnut buttercream; the marzipan shell is sweetly almond-rich, and crystalline sugar on the surface delivers a gentle crunch before the soft interior gives way.

Sponge cake depends on beaten eggs trapping air bubbles that expand during baking at 200°C; gluten development is minimized to keep the crumb tender. Curaçao applied cold to sliced layers penetrates and moistens without cooking the starch. Buttercream stability relies on emulsification: beaten butter disperses cocoa fat and hazelnut oil into a water-continuous phase stabilized by milk proteins. Yellow marzipan — ground almonds and sugar kneaded with glucose syrup — forms a pliable, moisture-sealing crust over the entire dome.