One of our favorite things at our local Hawaiian Mix Plate! Prep time includes the sitting overnight in the fridge. This definitely isn't a "quick" recipe but it is worth the wait.
Cut slits in pork and rub with salt, garlic & liquid smoke or soy sauce. Wrap in plastic and let in rest overnight in the fridge.
10-12 hours before serving, place in crockpot. Add an inch of water. Turn crockpot on low and leave it to cook for 10-12 hours, flipping pork over halfway through.
Remove from the crockpot and shred with two forks.
Eat as is or on a sandwich or even stir fried quickly with some shredded cabbage!