Mantova, Lombardia
Mantova's monumental crumble cake — the name means 'crumbly thing' and the eating convention is to break it with your fist, not slice it with a knife. Made from equal parts polenta flour and plain flour with almonds (half whole, half ground), lard and butter, sugar, egg yolk, and vanilla. Baked until deeply golden and utterly friable. The texture is between a biscuit and a tart crust — not cake at all, but a mass of butter-sand crumble.
Buttery, sandy, deeply toasted almond, faintly vanilla — a purely textural pleasure that exists in no other category of Italian baking
The fat (traditionally lard and butter in equal parts) must be rubbed in cold to create the distinctive sandy-crumble texture rather than a smooth dough — never work it warm. Polenta flour gives graininess and crunch distinct from plain-flour shortbread. Almonds must include a percentage of bitter almonds (or marzapane substitute) for depth. The mixture is pressed loosely into the tin — no rolling — and should look rough and uneven before baking.
Serve with a glass of Moscato di Mantova or sweet Lambrusco — the contrast of fizz or sweetness against the dry crumble is the intended pairing. For an elevated presentation, break the sbrisolona onto dessert plates and add a quenelle of mascarpone cream alongside. The crumbs make an outstanding base for a cheesecake or the base layer of a semifreddo.
Over-mixing develops gluten and produces a tough result instead of a crumbly one. Using all butter without lard gives a less complex, more one-dimensional richness. Baking at too low a temperature prevents proper colour development that gives the cake its toasted, nutty character. Slicing with a knife (instead of breaking) is culturally incorrect and practically difficult.
I Dolci della Tradizione Lombarda — Accademia Italiana della Cucina