1Finely mince 2-3 chipotle peppers, depending on your spice preference. In a small bowl, combine minced pepper with cola beverage and 1-2 teaspoons of sauce adobo sauce from the can of pepper (again, the amount depends of spice preference).
2In a slow cooker, add meat and cover in chipotle-cola mixture. Cook on HIGH for 4-5 hours or on LOW for 7-8 hours.
3Once meat has cooked, transfer to a cutting board and shred with two forks. Return meat to slow cooker and stir into cooking liquid, thoroughly mixing until most of the liquid has absorbed back into the meat.
4Add meat to taco shells and top with your favorite taco toppings.