Lamb Leg is not only a rich source of high-quality protein, but fresh lamb leg is also an outstanding source of many vitamins and minerals, including iron, zinc, and vitamin B12. Because of this, regular consumption of lamb may promote muscle growth, maintenance, and performance. In addition, it helps prevent anemia. Some prefer it very rare; others want it well-done throughout. Leg of lamb is tender and juicy and will be good along a wide spectrum of doneness.