“Sous-vide”-cooking is a method used to cook food sealed in airtight plastic bags in a water bath for longer than normal cooking times, sometimes as long as 72 hours, at a regulated temperature much lower than normally used for cooking. The intention is to cook the item (mostly tough cuts of meat) evenly, preventing the food from overcooking whilst keeping it juicy, succulent and tender.

For the pork:
1 kg/2 lb pork belly, without bone
300 ml pork stock
2 tablespoons/30 ml vegetable oil
The marinade:
1 stalk lemongrass, hard outside removed, the core finely chopped
1 teaspoon/5 ml white pepper, freshly ground
2 teaspoons/10 ml Chinese five-spice powder (mix your own)
4 cloves garlic, crushed
2 teaspoons/10 ml fresh ginger, peeled and finely chopped
Kosher salt
1-2 red chilies, seeds removed, finely chopped
- For the marinade, mix the lemongrass, spices, garlic, ginger, salt and red chilies together in a small bowl, then rub the marinade into the pork belly all round. Cover with cling film and marinate for at least two hours, or up to 12 hours, in the fridge.
- Preheat the oven to 100ºC/212ºF.
- Place the marinated pork in a food grade plastic bag and pour in the stock.
- Seal the bag in the vacuum packing machine.
- Meanwhile heat water in the ovenproof basking dish to the same temperature as you have set the oven.
- Carefully lower the sealed bag into the hot water and make sure the bag is totally covered with the water.
A good idea is to put a circle of greaseproof paper with a small hole in the middle, on top of the meat before you secure the lid on.
- Place the baking dish in the oven and set your timer for 3 hours.
- When the cooking time is up, carefully remove the bag from the hot water with tongs and place in a deep dish.
- Cut the bag open and let the meat and juices slide out of the bag into the dish.
- Pour out the sauce in a saucepan.
- Press the meat between two baking trays with a weight on top to flatten the skin and place in the fridge to chill for 1-2 hours.
- Just before serving set the oven to grill and place the pork belly, skin side up, about 30 cm/12 in from the grill.
Keep an eye on the skin as it can burn in an instant.
- Meanwhile, strain the sauce into a saucepan and over high heat, reduce to the desired consistency.
- Serve with Puy lentils with celeriac and hazelnuts and a crispy salad.
The sauce will have all the flavors of the marinade as well as the meat.
