Light your smoker/barbecue & leave to preheat to 275°f/135°c. Make sure that your barbecue is set up for indirect cooking.
Once up to temperature, place the pork shoulder fat side up in the barbecue then leave to cook undisturbed for 3 hours. Make sure to maintain a consistent barbecue temperature throughout the whole cook!
In the meantime, add the apple juice & water into a spray bottle then set aside. We'll be using this to spritz the pork.
After 3 hours have passed, continue cooking but spray the pork with the apple juice spritz every 45 minutes, until a decent bark has formed & the internal temperature is at least 165°f/74°c.
Next, lay down a couple of sheets of foil, overlapping them slightly then place your pork shoulder in the middle. Give the pork a good spritz then wrap up tightly in the foil.
Return the pork to the smoker (or into an oven) & continue cooking at 275°f/135°c until it is tender & probes like butter. The internal temperature of the pork will be between 195°f-205°f (90°c/96°c) once cooked.If you're cooking in an oven, place the wrapped pork into a roasting tin then pour in a thin layer amount of water. Once wrapped, the pork will need anywhere from 2-6 hours of cooking to become tender. Let the pork rest (still wrapped in the foil) for at least an hour then shred the meat by hand, discarding the bone (it should pull out clean). Mix the meat with any juices then serve!