Marinade: Combine the marinade ingredients in a medium-sized dish. Add the steak and turn to cover. Cover and refrigerate for at least 1 hour or up to 4 hours.
Dressing: Place the ingredients in a jar or small container with a lid. Shake well to thoroughly combine.
Preheat the barbecue to a high heat. Grill the steak on each side for 2–3 minutes, 2 minutes for rare, 3 minutes for medium rare.