If you purchased a pork loin with the belly attached, unroll the roast so ... and secure the whole porchetta at 1- to 2-inch intervals with kitchen string. For the 2- or 3-piece roast, sprinkle ...

For a whole pork belly, take a leaf out of the Italians’ book: slather the belly with herbs, roll it up and tie it tightly, then roast in a low oven overnight (look for a recipe for porchetta).