- In a small bowl mix the seasoning, sugar, garlic, mustard, paprika and Worcestershire sauce together.
- Place the ribs or oxtail pieces in a shallow tray and coat with the spice mixture on both sides. Cover and marinate in the fridge for 1 hour, or overnight if time allows.
- Preheat the oven to 170°C, 150°C Fan, Gas Mark 3. Heat the oil in a large non-stick pan and brown the ribs or oxtail pieces in batches. Transfer to a 3.4L heatproof casserole dish with the marinade juices. Add the leeks, parsnips and bay leaves to the pan and cook, stirring occasionally for 2-3 minutes then transfer to the casserole dish.
- Add the stock and tomatoes and, bring to the boil. Remove from the heat, cover and cook in the oven for 3-3½ hours, stirring occasionally.
- Remove the bay leaves, skim off any oil and serve with creamy mash and roasted vegetables.
If you'd like to try it in a slow-cooker, we've worked it all out for you: Slow Cooked Beef Short Ribs (Slow Cooker Version)