Combine ingredients in glass dish and let steak marinate while heating grill to high. Turn steak at least once in marinade. (I marinated the steak longer ... probably 30 minutes in all.)
Remove steak from marinade and sear quickly on both sides. Turn grill down or move steak to lower heat area. Cook additional 10 minutes for medium rare (or longer as desired). Move to platter and let rest about 10 minutes. It will continue cooking, but hold in the juices this way.
Recipe by gfe--gluten free easily at http://glutenfreeeasily.com/manly-food-steak-of-course/