In your slow cooker add pork shoulder and onion.

Season pork shoulder with kosher salt and pepper. Don't be afraid to give a nice coat since this will be used to season a lot of meat.

In a small bowl whisk together mustard, honey, brown sugar, apple cider vinegar, and apple cider.

Pour over the pork and cover the slow cooker with the lid.

Cook on high for 4-6 hours or low for 8-10 hours.

Once the meat is fall-apart tender simply shred the meat in the slow cooker. Remove any large pieces of fat or bone. There should be enough sauce in the pot to coat the meat and keep it moist.

Serve the pulled pork over prepared rice, add a little sauce over the pork and rice and sprinkle with cilantro.