Reserve enough cilantro (2 tablespoons of chopped cilantro) for the salsa before placing the remainder of the bunch and the other marinade ingredients into a food processor or blender. Blitz to form a loose paste. Place the steak in a large zip-top bag and pour in the marinade. Massage the steaks and marinade together making sure that the meat is completely coated. Squeeze the excess air from the bag, seal and let marinate in the refrigerator for at least 4 hours and as long as overnight.
For the salsa: Stir together ingredients and thoroughly combined. Cover and refrigerate 1 hour before serving. Best if used the same day.
Remove the steak from the marinade and pat dry with paper towels. Generously salt with kosher salt and let come to room temperature for 45 minutes to 1 hour. Preheat grill to high. Brush and oil grates before cooking. Lay steak on the grill at a 45 degree angle to the grates and cook for 4 to 5 minutes, flip and cook for 4 to 5 minutes more for medium-rare. Use a digital thermometer and remove steaks from the grill somewhere between 125°F and 130°F. Remove and let rest 10 minutes before slicing across the grain of the meat. Serve immediately on double warm tortillas with a squeeze of lime, a generous helping of radish salsa, and a sprinkle of Cotija cheese.
Recipe by Grilling Outdoor Recipes powered by Bull Outdoor Products at https://blog.bullbbq.com/carne-asada-street-tacos-with-radish-salsa/