1. Clean the beans and the place them in a slow cooker along with the pork (preferably chopped into chunks) and 1/2 onion. Be sure to cook on low for at least 10 hours.
About the end add the salt and epazote. Just for 15 minutes.
Remove the onion and the epazote. Serve with finely chopped onion, radish, cilantro, lime and habanero pepper. You may add chiltomate sauce.