Pre-heat oven to gas 2, 150°C, fan 130°C. Mix all dry ingredients together and rub all over the pork. Mix the treacle and cider and set aside.
2. Pop the pork in a deep casserole dish skin side up and pour in the cider mix. Cover with a lid and place in the oven for 4 hours until falling apart. Check midway!
3. Remove from the oven, drain the liquid and set to one side (skim away the fat). Remove the skin and shred the meat with two forks.
4. Mix one third to half the liquid with the BBQ sauce , combine with the pork - perfect as a taco filling with a mango salsa!