Add the skirt steak to a large ziplock bag with the lime juice, sea salt, cumin, ground chipotle pepper, cilantro and garlic.
Toss to coat the skirt steak, place in the refrigerator and marinate for 30 minutes.
Heat a grill to medium-high heat. Place the steak on the grill, grill for 7-9 minutes per side.
Remove from the grill and rest on a cutting board, loosely covered with foil, for 5-10 minutes.
Use a sharp knife or electric knife to thinly slice the carne asada against the grain.
Heat the tortillas on the grill for 30 seconds per side.
Serve the carne asada in the tortillas with your choice of toppings.
Notes
Nutritional information provided does not include the optional toppings.
If skirt steak cannot be found, flank steak can be used in its place.
The carne asada should marinate for at least 30 minutes, but can be marinated for up to 8 hours.
If you don't have a grill, you can make these tacos on the stovetop in a cast iron skillet or grill pan. Follow the directions as instructed and simply "grill" the meat over medium high heat on the stove in a cast iron pan.