In your blender place the 3-4 Chipotle Chili, 1 1/4 cups beef broth, 4 tsp. minced garlic, 1 1/2 Tbs. cumin, 1 Tbs. dried oregano, 3/4 tsp salt, 1/2 tsp. ground black pepper, 1/4 cup fresh lime juice. On medium speed blend all the ingredients together until semi-smooth.
Place beef in your slow cooker. Pour sauce over the top of the beef. Cover meat and cook on low for 8 hours.
Remove from slow cooker and shred with a fork, removing any extra fat.
Cover a baking sheet with foil and place shredded beef on top of foil. Drizzle with two large scoops of remaining sauce. Place in broiler for 3-4 minutes until beef is crispy and the tips are golden brown.
Sprinkle with cilantro and serve with flour tortillas, grated cheese, rice, beans, and any other topping you would like in your burrito.