Step 1

Place the beef tenderloin cubes, pork loin cubes, and masa harina in a plastic bag, and shake to coat the meat. Heat the olive oil in a large skillet over medium-high heat, and cook and stir the meat cubes until evenly browned, about 10 minutes.

Step 2

Place the meat, red onion, tomatoes, green chile peppers, beef broth, cumin, potato, garlic, oregano, cilantro, cayenne pepper, salt and white pepper in a slow cooker. Cook on Low until the meat is tender, about 8 hours.