Sbrisolona

The sbrisolona began as a humble Mantuan country cake, made by peasant families from cheap, local ingredients — cornmeal, lard and hazelnuts — and is documented as predating the 1600s. It is said to have risen to the table of the Gonzaga court, where the recipe was refined with finer ingredients, the lard giving way to butter and the hazelnuts to almonds. Its old name was «torta delle tre tazze», the three-cup cake, for the roughly equal cupfuls of flour, sugar and almonds (the wheat flour later joining the original cornmeal). The name sbrisolona comes from the Mantuan dialect brisa, a crumb, after the cake's defining friability.

Dry, sandy and intensely crumbly — it is not meant to hold together, and snaps into coarse, uneven shards the moment you press it. The texture is granular from the cornmeal and crunchy from the almonds, somewhere between a biscuit and a streusel, rich with butter and faintly scented with lemon. The flavour is nutty, buttery and not too sweet, with the toasted-corn graininess underneath. Dipped in a sweet wine it softens just enough. A good sbrisolona is shatteringly short and dry; a bad one is dense, soft or chewy, which means too much binding or too little baking.

Crumbliness is engineered by starving the dough of gluten and water. The mix is high in fat and almost without liquid, with only egg yolk and butter to moisten, so the wheat flour's gluten barely develops and the cornmeal — which has no gluten at all — and the ground almonds break up the structure into sand. The dough is rubbed, not kneaded, and pressed loosely into the tin rather than packed, leaving it full of fault lines. A long bake at moderate heat drives off what little moisture there is and toasts the butter, sugar and almonds (Maillard and caramelization) to a deep golden, brittle crumb that fractures cleanly. Pressing it firm or adding more egg would make it cohere and defeat the point.