Image & recipe taken from http://group.slimmingworld.com
In a small bowl, mix passata, Worcestershire sauce, balsamic vinegar, mustard powder, garlic, sweetener and seasoning. Transfer to a small pan and simmer for 15 minutes, or until the sauce thickens.
Meanwhile, trim and remove all visible fat from the pork and sear all sides in a hot frying pan sprayed with low calorie cooking spray. Transfer to a roasting tin lined with aluminium foil and pour the sauce over the pork making sure all the meat is covered. Cover with the foil and bake on 160°C for 4-5 hours.
Remove the pork from the oven and place on a cutting board. Allow the meat to cool for approximately 15 minutes, then shred into bite-sized pieces using two forks.