Fresh English Best End Half Leg of Lamb: There is a sentence used to praise a roast leg of lamb "You can smells its fragrance before you see it." Push a few slivers of garlic and small sprigs of rosemary down into slits made in the lamb and season with plenty of salt and pepper. Roast the lamb in a preheated oven for 45 minutes. The leg is one of the five basic major (primal) cuts into which lamb is separated: shoulder, rack, shank/breast, loin, and leg. Try Roast leg of lamb with rosemary and garlic recipe.