For a rdiculously complicated and ridiculously good taco recipe:
Season with salt, pepeper, garlic, cumin, coriander, ground hatch chili
Braise with all that plus all the onion and garlic skins you have, some beer and vinegar--barely enough to almost cover, more onion and garlic, and orange/lemon/and/or lime zest
remove inedible stuff, seperate meat from liquid
put meat in pan, smoke for an hour or three while cooking somethin else. the goal is to pick up some extra flavor, but it should be mostly cooked in the braising step, only needing 2-3 hours of slow cooking in smoker to get to fall-apart stage
Shred meat and reheat/crisp up in pan. Add saved liquid and fry saved liquid until most of liquid is gone.