- Preheat the oven to 180ºC / 160ºC fan / Gas 4. Weigh the joint and calculate the cooking time: 30 minutes per 450g / ½kg, plus 30 minutes (for medium).
- Dry the rind and score it deeply using a sharp knife. Brush with oil and sprinkle with salt. Place in a deep foil-lined roasting tray along with the apples, fennel and cider.
- Scrunch the foil around the meat but leave the rind exposed to allow the crackling to crisp.
- Place in the oven for the calculated cooking time.
- Remove the joint from the oven and allow to stand for about 10-15 minutes before carving into thick slices.
- Serve with creamy mashed potato and curly kale and drizzled with the cooking juices.