Combine steak and all marinade ingredients in a large plastic storage bag or bowl. Toss to coat. Marinade at least 1 hour or up to 24.
2. Step
Remove meat from marinade, discard.
3. Step
Heat a grill, grill pan or large saute pan to high heat. Cook to desired doneness. Allow the meat to rest at least 10 minutes before thinly slicing against the grain.
4. Step
To prepare the sauce, combine mayo, chipotles, lime juice and salt. Stir to combine.
5. Step
Heat a saute pan to medium heat.
6. Step
Place one corn tortilla in the pan, sprinkle about ¼ cup (25 G) cheddar cheese on top. Cover with a second corn tortilla. Cook just until the cheese is melted, flipping once. The tortillas should be soft and pliable, not crispy.
7. Step
To assemble the tacos, top the corn tortillas with a spoonful of guacamole.
8. Step
Add few slices of steak, then top with pico de gallo, cotija cheese and some of the sauce. Garnish with cilantro if desired.
