Slather 2 to 4 steaks with the prepared mustard, more or less to taste. Marinate in bag or container with dark soy sauce for 1 to 2 hours in the refrigerator. Heat the honey in the microwave for a few seconds to make it pourable and drizzle onto both sides of steak. Grill over medium high heat. The grate marks will brown quickly so rotate your steaks 45 degrees after 1 or 2 minutes to create cross hatch grill marks. Flip and repeat on the other side of your steaks. Remove the steaks from the grill and let rest for 10 minutes while kept warm and covered. Serve medium rare. If you like well done, make a pot roast.