1.In a large bowl, combine steaks, ginger, garlic, sauce and chilli flakes. Cover; stand 15 minutes.
2.Meanwhile combine carrot, cucumber, onion, extra garlic, vinegar and sugar in a large bowl. Cover; stand for 15 minutes.
3.Brush steaks on both sides with oil. Cook on heated grill plate (or barbecue) over high heat, 2 minutes each side for medium-rare, or until cooked as desired. Remove from heat; cover with foil, rest 5 minutes.
4.Place tortillas on heated grill plate 30 seconds each side or until charred lightly.
5.Cut steak into thin slices. Top each tortilla with a few small lettuce leaves, sliced steak and pickled vegetables. Drizzle with chilli sauce. Top with sesame seeds and coriander.
If tortillas are hard to separate, microwave in the opened bag (remove silica pack first) 30 seconds.Note