Place the Flank Steak in a large plastic storage bag. Add soy sauce, orange slices and lime juice. Chop green onions and cilantro and add them into the bag. Rub the seasoning all over the beef. Seal the bag and let it marinate for at least 6 hours.
Remove the meat from the marinade. Pat dry with a paper towel. Remove all excess herbs from the carne asada. Grill the carne asada until the internal temperature reaches medium-rare at 145 °F. Hot tip: Don’t have a grill? Snag a grill pan and make carne asada right on your stove top.
Let it rest for 10 minutes. Slice it against the grain and cut it into bite-sized strips.
Carne Asada Street Tacos
Spoon mashed avocado onto a tortilla. Top it off with a couple of strips of carne asada.
Sprinkle with cilantro and onion. Sprinkle with cotija cheese. Right before serving, squeeze some lime juice over the top.