Mix together a half cup of oil with about a quarter cup of dark soy sauce, about 1 inch fresh ginger finely chopped, a clove of garlic, a couple of chopped green onions, a bit of fresh gound pepper, lime zest and the juice of about half a lime. Marinade for 2 hours or as much as over night. (Discard the marinade or you can reserve the marinade and bring it to a slow simmer for about 10 minutes for a sauce to drizzle over the steak when served).
Grill the flank steak over direct high heat till desired doneness (about 140 for medium). Remove and let rest fo a few minutes and slice across the grain.
I julienned carrots and added green beans and sliced muchrooms and seasoned them all with fresh garlic and chopped ginger and fresh ground pepper as well.