Recipe from Rich Bayless. I took this to a neighborhood get together, with rave reviews.
medium (1 pound total) red-skin boiling or Yukon Gold potatoes, cut into ½ cubes
2 pounds meat, into 1-inch pieces [skinless chicken thighs OR boneless pork shoulder OR boneless beef chuck]
One 28-ouce can diced tomatoes in juice (preferably fire-roasted)
3 to 4 canned chipotle chiles en adobo, seeded and sliced ¼ inch thick
1 tablespoon chipotle canning sauce
1 tablespoon Worcestershire sauce
1 teaspoon dried oregano, preferably Mexican
3 garlic cloves, peeled and finely chopped or crushed through a garlic press
1 medium white onion, sliced ¼ inch thick (optional)
4 ounces fresh Mexican chorizo sausage, casing removed (about ½ cup) (optional) (skip if using beef)
24 corn tortillas or tostadas
1 cup crumbled Mexican queso fresco or other fresh cheese
2 large avocados, pitted flesh scooped from the skin and cut into 1/2-inch pieces for serving
Spread the potatoes over the bottom of a slow cooker and top with the meat. In a large bowl, mix the (undrained) tomatoes with the chipotles, chipotle canning sauce, Worcestershire, oregano, garlic, optional onion, and 1 ½ teaspoons salt. Pour the mixture evenly over the meat and potatoes. Cover and slow-cook on high for 6 hours. (The dish can hold on the slow-cooker’s “keep warm” function for 4 more hours or so.)
When you are ready to eat, fry the optional chorizo in a medium (8-inch) skillet until thoroughly done, about 4 minutes. Uncover the tinga and spoon off the fat that has accumulated on top. Sprinkle on the chorizo, then stir everything together, breaking the pork into smaller pieces—right for wrapping in tortillas. (If there is a lot of liquid, tip it off and boil it rapidly until reduced and syrupy, then stir it back into the meat mixture.) Taste and season with additional salt if you think the tinga needs it. Serve with the warm tortillas, fresh crumbled cheese and avocados for making soft tacos or serve on a tostada.
No Slow Cooker?
Lay the meat in a medium-large (4- to 6- quart; 10- to 12-inch-diameter) heavy pot (preferably a Dutch oven), and top with the potatoes. Cover with the tomato mixture, set the lid in place and braise in a 300-degree oven for 2 to 2 ½ hours, until meat is completely tender. Complete dish as described.