1 + 1/2 cups your favorite barbecue sauce, divided
1 packet of lipton onion soup mix
Remove the pork from the plastic and trim any fat that you see and place it in your crock pot. If you have a small slow cooker, you may need to cut the tenderloin in half (don’t worry, I did it with mine and it doesn’t change a thing about the taste/flavor/tenderness).
In a bowl, combine the root beer, 1 cup of barbecue sauce, and half the lipton onion soup mix. Sprinkle the remaining soup mix directly on the pork. Pour the root beer mixture into the crockpot.
Cook for 7-8 hours on low or 5-6 on high (I recommend doing it on low!).
After the pork is cooked remove it from the crock pot, shred with two forks, and return to the crockpot to soak up the remaining root beer/barbecue mixture. Add in the additional 1/2 cup of barbecue sauce and mix together.
At this point I usually let it heat through again, the pork tends to cool off when I’m shredding it, for about 20 minutes on low. Then you just serve it however you want!