Spicy Dr. Pepper Pulled Pork

Friends of ours first posted the link to this recipe on Facebook.  This is a recipe from The Pioneer Woman website, and a link to her website post, as well as a printable version of this recipe, can be found here.  I promise you, this recipe is worth trying!!

Ingredients:
1 whole large onion
1 whole pork shoulder (aka pork butt), 5-7 lbs, bone in
Salt and pepper
1 can, 11oz, chipotle peppers in adobo sauce (I don't like really spicy stuff, so I use a 7 oz. can)
2 cans Dr. Pepper
2 tbsp. brown sugar

Preparation:
Preheat the oven to 300 degrees.  Peel the onion and cut it into wedges, and spread the wedges across the bottom of a large roasting pan or dutch oven.  Salt and pepper the pork, rubbing the seasoning into the meat with your hands.  Pour the entire can of peppers (sauce and all) over the top of the meat and into the pan.  Pour in the Dr. Peppers and stir in the brown sugar.  Place the lid on top of the pot and place in the oven.  Cook for at least six hours, turning the meat over a few times during cooking.  After six hours, remove meat from oven and test with a fork--if the meat pulls apart easily with the fork, then it's done.  If it doesn't, place the meat back in the oven and cook for another hour.  Once the meat is cooked and falling off of the bone, remove the meat from the pan and begin to pull apart with forks.  Discard juice, onions and fat pieces.  This makes a ton of pulled pork, and it tastes incredible!!