Step 1

In a small bowl, mix the treacle, cider vinegar, paprika, cumin, mustard powder and chilli powder until smooth. Using a sharp knife, make deep slashes in the skin of the pork shoulder to cut through the skin and fat layer, but not the meat. Place the joint, skin-side down, in a large dish and rub the spice paste into the meat (not the fat). Turn skin-side, cover tightly with cling film and put in the fridge overnight, or for 24 hrs to give the pork maximum flavour.

Step 2

Heat oven to 150C/130C fan/gas Transfer the pork, skin-side up, to a deep roasting tin, rub 1 tbsp sea salt onto the skin and pour 500ml water into the bottom of the roasting tin. Cover tightly with foil and roast in the oven for 5 hrs.

Step 3

Remove the foil, turn up the oven to 200C/180C fan/gas 6 and cook for a further 1 hr 30 mins or until the pork is very tender and the skin has turned to crispy crackling.

Step 4

Once the pork is ready, take it out of the roasting tin, cover with foil and leave to rest. Pour the juices from the roasting tin into a jug and leave to separate. Pour off the fat layer and transfer the remaining juices to a large sauté pan. Simmer over a high heat, stirring, until reduced to a rich gravy.

Step 5

Once rested, cut the pork into pieces – it should pull apart with very little effort – and break the crackling into shards. Serve the pork and crackling with the gravy poured over and mustard mash, honey-roasted carrots and quick pickled red cabbage on the side (see goes well with below).