How to Make It
Place pork in a slow cooker. Sprinkle with ranch mix and 1 tablespoon of the brown gravy mix. Top with butter, pepperoncini peppers, and pepper liquid. Cover and cook on low until tender and pulls apart easily with a fork, 7 to 8 hours.
Transfer pork to a serving platter. Skim and discard fat from cooking liquid; reserve 1/3 cup cooking liquid. Whisk together cold water, reserved cooking liquid, and remaining brown gravy mix in a 2 cup glass measuring cup. Microwave 2 1/2 to 3 minutes until slightly thickened.
Shred pork, and serve with gravy.