The Panino con Provolone del Monaco leads on age and sharpness. This is a PDO stretched-curd cheese from the Monti Lattari, the steep peninsula above the Bay of Naples, and unlike the soft fresh provola of the same dairy country it is matured for many months until it turns firm, straw-coloured, and frankly piccante, a hard provolone with a pungent, savoury bite and a long finish. The name belongs to the cheese, not a monastery dish, and the sandwich exists to carry that sharpness directly: a few slices of a mature, assertive wheel on the right bread, with the discipline to add nothing that would round off the edge that is the whole point.
The craft is presenting an aged, piquant cheese without letting it overwhelm or dry the bite. Provolone del Monaco is firm and a little oily from its long maturation, so it is cut into slices with body rather than shaved to nothing, thick enough to hold its sharpness across the bite but not so thick it reads as a block. The bread is plain and sturdy, a crisp-shelled roll or a country loaf, chosen so a strong cheese has a neutral base rather than a competing one. Nothing is spread: the cheese is already pungent and fat enough to carry itself. It is eaten at room temperature, when the paste softens slightly and the piccante note opens; cold, it goes hard and the sharpness turns flat.
The variations are the other Campanian stretched-curd cheeses, each a separate cheese and its own article. The young milky panino con provola and its smoked twin the panino con provola affumicata, both soft and fresh where this one is hard and aged; the caciocavallo of the south, worked the same way and hung to mature. Each is a different point on the pasta filata family, from fresh to long-aged, and each deserves its own article rather than being crowded in here.