2) Add the cumin and cook, stirring, for 1 minute. Add the beef mince; raise the heat to high and cook, breaking up the meat with a spoon, until the meat is no longer pink. Stir in the tomatoes, water, chipotle and adobo sauce, oregano and salt and pepper. Cook, partially covered, stirring from time to time, for 30 minutes. Stir in the beans and continue cooking, partially covered, 20 minutes longer. Season, to taste, with salt and pepper.