Drain and rinse the beans. Fry the Chorizo, remove from pan and set aside. Put onions and garlic to the pan and saute until tender. Add a little oil if needed. Scrape up the crusty bits. Deglaze the pan with a little water. Add back the chorizo. Add the beans. Mix em up. Add a little water and bring to a boill; this is not meant to be dry like baked beans. Change it up by adding beer or coffee instead of water. I'm sure the cowboys would. Cover the bean pot and put in a 225 oven for 3 hours, more or less. Give em a stir and add a little more liquid if needed.