Flank steak has always been one of those cuts of meat that deserves to be cooked on the grill. After an overnight marinade, I set it out onto the fire and allow the meat to char a bit, adding those bitter flavors to pair with the salty, sweet, and sour elements that no coat the flesh.
Here's a simple way to add bit of flavor to your burgers, met loaf, or stews. Za'atar is wonderful spice mixture that usually contains thyme, sesame, and sumac (a wild food I love to harvest), which adds a Middle Eastern flair to the beef. Whenever possible, I prefer to cook my burgers on an open fire, as the char from the heat adds such great flavor.