Pat the pork belly dry
Score the skin or fat if desired
Season with salt and any preferred spices
Preheat the oven to 300°F to 325°F
Place the pork belly on a rack in a roasting pan
Roast until the meat is tender, about 2 to 3 hours
Increase the oven temperature to 425°F to 450°F
Roast until the skin is crisp and browned, about 20 to 30 minutes
Rest the pork belly for 10 to 15 minutes
Slice and serve