Also known as the "butcher's steak" or "hanging tender" because of its scarcity and prized flavor. In the old days, butchers kept them for themselves because there is only one per animal.
Preparation:
Steak seasoning both sides
Brush/rub oil both sides
Rest at room temperature 1-2hrs
Grill or Broil high heat - turning every 2min to desired doneness (pan searing not recommended)
Cut longwise down the center along the connective tissue. This will yield two long strips of meat that is easy to cut across the grain with each bite