The Best Refried Beans {Made in the Slow Cooker and Fat-Free}

dry pinto beans, rinsed, remove any stones or shriveled beans

salt

medium white or yellow onion, peeled and cut into large chunks

garlic, peeled and smashed

jalapeno, seeded and membranes removed, chopped

white vinegar or same amount of liquid from a jar of jalapenos or banana peppers

Salt