Months of air-drying concentrate everything into a lean so saturated with savor it needs nothing beside it, and the sandwich stands or falls on that one cut. Prisuttu is the Corsican air-dried ham, a whole leg salted and hung to dry for many months until the lean turns deep red and dense and the fat goes silky and faintly nutty, intensely savory from the long cure. The build is a sturdy crusted loaf, split and usually buttered or left bare, and slices of prisuttu shingled along the bread, with the discipline to add little else so the cure is what you taste. The region is Corsica.
The logic follows from how the ham is made. Air-drying drives off moisture and concentrates everything, so a slice is firm, lean, and saturated with savor, and it does not need a sauce or a melted cheese to feel rich; the silky fat softens against the warm crumb and reads almost like a spread. That concentration is also the constraint. Prisuttu is salty and deep from months of curing, so a strong cheese or a sharp condiment competes with it rather than presenting it; the successful sandwich is close to bare, a good crust and the ham sliced thin enough to drape and fold, maybe butter to bridge the salt to the wheat, perhaps a cornichon for one acidic note. The bread needs a real crust because the filling brings no structure of its own, and the ham must be sliced thin, because at full thickness the cured lean turns tough and the salt goes relentless. It is a sandwich that rewards restraint and punishes the urge to build.
Variations stay inside the Corsican charcuterie shelf rather than wandering off it. The same bread takes coppa, the marbled dry-cured neck, fattier and rounder than prisuttu; or lonzu, the cured loin, leaner and milder; or a slice of firm Corsican cheese laid alongside the ham rather than over it. Each is a swap of one cured thing for another, the bread and the restraint held constant. The Sandwich au Prisuttu belongs with the cured-meat builds the catalog groups under Sandwich Saucisson & Charcuterie, and its specific contribution is a long-dried island ham concentrated enough that the sandwich's job is to get out of its way.