• Tip all the marinade ingredients into a mini chopper or blender and blitz until smooth. If there’s a thin membrane on the back of the ribs, peel this off as best you can. Smear half the marinade over the ribs, then transfer to a baking tray, cover and chill for at least 2 hours or up to 24 hours.

Cook the ribs on the BBQ:

• If you have a lidded or kettle BBQ, set it up for indirect cooking (with coals on one side and a drip tray under where you’ll be cooking the ribs). If you can read the temperature on your BBQ, it should be at about 150C.  For slow-cooking on the barbecue over the drip tray, first pour 500ml water into the tray, lay the ribs on the grill rack above, cover the barbecue with its lid and cook the ribs for 2 to 3 hours, turning occasionally and topping up the tray with water if needed.
• While the ribs are cooking, tip the rest of the marinade into a small saucepan and simmer for 10 minutes until thick and gloopy – this is the sauce to serve with the ribs. When the ribs are cooked, leave to cool a little and tip any cooking juices into the barbecue sauce. The sauce and ribs can be prepared up to two days ahead, left to cool then kept chilled.
• Remove the ribs to a board and remove the drip tray from the barbecue. Set the barbecue up for direct cooking, light some new coals or set a gas barbecue to medium. Return the ribs to the grill, then brush generously with the sauce. Working quickly, grill the ribs, basting with more sauce as soon as they start to char and turn every minute until well-coated, charred at the edges, caramelised and sticky. Serve each person a half-rack of ribs with any extra sauce on the side.

Cook the ribs in the oven:

• Heat the oven to 160C/140C fan/gas 3. Put the ribs in a roasting tin, cover tightly with kitchen foil and bake for 2.5 hours until the bones are exposed and the meat is tender.
• See step 2 above to make the marinade into a sauce, while the ribs are cooking.
• Remove the ribs from the oven and increase the heat to 220C/200C/gas 7. Brush the ribs generously with the sauce and cook for 5 minutes uncovered.  Baste then turn over and baste the other side and cook for another 5 minutes, until they’re caramelised and sticky. Serve each person a half-rack of ribs with any extra sauce on the side.