Add water and beans, stir and scrape up any browned bits that are stuck to the pot.
Cover and bring to a boil.
Reduce heat to low and simmer for 45 minutes. Add more water 1 cup at a time if soup becomes too thick.
Add the potatoes and simmer for 15-20 minutes or until the potatoes are cooked through.
Add the chopped cilantro and stir incorporate.
Instant Pot Instructions
Follow steps 1-3 in the Instant Pot.
Set the pot to Off/Keep Warm
Close the pot and set it for 15 minutes on manual.
NPR 10 minutes, then QPR or just NPR.
You can also make it in a slow cooker by combining all the ingredients in the crock and setting it on low for 8-10 hours. I also highly recommend making a double batch and freezing it in deli containers.