Rinse the dried pinto beans thoroughly and add them to a large slow cooker.
Add the diced onion and minced garlic over the beans.
Sprinkle the onion soup mix evenly across the top.
Add the sliced hog jowl pieces into the pot.
Pour in the chicken stock and the water until all ingredients are covered.
Place the lid on the slow cooker and set it to HIGH.
Cook for 9.5 hours without opening the lid to maintain heat.
After 9.5 hours, stir the beans gently to combine the rendered fat and aromatics.
Taste the broth and add salt and pepper as needed.
Serve hot in bowls with a side of fresh cornbread.