Begin by trimming your Skirt Steak to remove as much extra fat you can from the outside. Tenderize your steak with a tenderizing mallet and aim for uniformity in thickness. Set aside.
Mix together all listed ingredients (except for the steak) in a bowl for the marinade.
Place the prepared steak in a deep pan and pour the marinade over top. Move the steak around to ensure the marinade gets in and under any folds. Let rest for 4-8 hours.
Heat your grilled to medium high. Once pre-heated, place the steak on the grill and cook to desired doneness. I recommend aiming for medium rare which can be achieved in about 5 minutes per side.
Remove the steak from the grill and let rest on a cutting board for 5 minutes.
Cut the steak against the grain and at a bias into strips. From here you can either enjoy it as is or continue on and use it to fill tacos and more!
Chop the strips of steak into small pieces and place in a pan heated on high on the stove. Sear for approximately 30 minutes stirring constantly.
Pour the meat into your desired number of tacos and top as you please!