2 garlic bulbs, peeled and sliced in half horizontally
1 large onion, peeled and cut into thick slices horizontally
asian greens and sugar snap peas, to serve
Preheat the oven to 160°C (325°F/Gas 3). Rub the pork belly all over with oil, dust with the Chinese five-spice powder and sprinkle with sea salt.
Place the garlic bulb halves and onion slices in the base of a large roasting tin and place the pork belly on top, skin-side down. Pour in a few tablespoons of water. Put the roasting tin in the oven and cook for 2½–3 hours.
Remove from the oven and turn the pork belly over so that it is skin-side up. Sprinkle the skin with a little extra sea salt.
Turn up the oven to 220°C (425°F/Gas 7) and cook the pork for a further 15–20 minutes until the skin is crispy. Carve into thick slices and serve with wilted Asian greens and sugar snap peas.