Oh man......I joke that I "slum" with mexican food, but gawd dammit!!!! That stuff is SO good!
I had saved au jus from steak scraps boiled for an hour or so, the juice from 2 slabs of dry rubbed baby back ribs, a little salt and pepper. I simmered the soaked beans overnight, in the soaking liquid and all the juices, but left a lid on so I wouldn't wake up to beans burning on the bottom of the pot. There was still waaaaay too much liquid the next day, so I decided to take the lid off and let them fall apart over the day. They almost burned. Got them just in time, added a little water an voila! Magic.