Flank steak is from the beef flank primal cut. It's very flavorful, but is one of the tougher cuts of beef. It can be prepared by braising or it can be grilled, but it's important not to overcook it. It should be grilled on a very hot grill for a short time, then let it rest, and then slice it against the grain. Each flank steak is approximately 1.5lbs.