http://www.americastestkitchen.com/recipes/detail.php?docid=23306
Give them your clicks, but because they want you to provide an email address (for free recipes :| ) I've provided the Tinga part below.
2 pounds boneless pork butt , trimmed of excess fat and cut into 1-inch pieces (see note)
2 medium onions , 1 quartered and 1 chopped fine
5 medium garlic cloves , 3 peeled and smashed and 2 minced or pressed through garlic press (about 2 teaspoons)
4 sprigs fresh thyme
Table salt
2 tablespoons olive oil
1/2 teaspoon dried oregano
1 (14.5-ounce) can tomato sauce
1 tablespoon ground chipotle powder
I used chipotle and adobado instead
2 bay leaves
1. FOR THE TINGA: Bring pork, quartered onion, smashed garlic cloves, thyme, 1 teaspoon salt, and 6 cups water to simmer in large saucepan over medium-high heat, skimming off any foam that rises to surface. Reduce heat to medium-low, partially cover, and cook until pork is tender, 75 to 90 minutes. Drain pork, reserving 1 cup cooking liquid. Discard onion, garlic, and thyme. Return pork to saucepan and, using potato masher, mash until shredded into rough ½-inch pieces (see Step-by-Step below); set aside.
2. Heat olive oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add shredded pork, chopped onion, and oregano; cook, stirring often, until pork is well browned and crisp, 7 to 10 minutes. Add minced garlic and cook until fragrant, about 30 seconds.
3. Stir in tomato sauce, chipotle powder, reserved pork cooking liquid, and bay leaves; simmer until almost all liquid has evaporated, 5 to 7 minutes. Remove and discard bay leaves and season with salt to taste.