Step 1

Put the flank steak in a 913 baking dish. Marinate the steak at room temperature in the lime juice for 30 minutes.

Step 2

Meanwhile, in a separate bowl, mix together the lime zest, salt, sugar, pepper, chili powder, cumin, paprika, garlic powder, oregano, and cinnamon.

Step 3

Apply the spice mixture evenly over the steak’s two sides, pushing with your fingertips to help the rub stick to the meat.

Step 4

Turn the grill up to high. Use long tongs to handle an oiled paper towel and lightly coat the towel before rubbing it over the grill rack.

Step 5

Place the meat directly on the grill and cook for 5 minutes per side. Remove the steak from the grill and rest it for 10 minutes with aluminum foil over it.

Step 6

Warm the corn tortillas over a gas flame or grill them while the meat is resting.

Step 7

Slice the steak against the grain to create strips. Using the corn tortillas, assemble the tacos by adding steak strips, red onion, avocado, cilantro, and queso fresco. If you like chimichurri, drizzle some on top. Add some lime juice if you desire. Serve hot.