The name comes from an Ilocano word meaning 'to preserve' — bagnet was originally a way to keep pork edible for weeks before refrigeration existed, not just a way to make it crispy.
Pork belly is boiled low and slow with garlic and peppercorns, then left to dry out overnight before a final deep-fry blisters the skin into a shattering, chicharon-like crust. Ilocos market stalls and roadside eateries chop it into chunks over rice or into pinakbet.