Lamb Leg Roast (American Style) is a whole hind leg of lamb.The sirloin section at the top is removed.
The shank bone is left on, and a small amount of meat trimmed off to expose at last an inch (2 1/2 cm) of the shank bone.
This exposure of the bone makes it “Frenched.”
It will weigh between 5 to 9 pounds (2 1/2 to 4 kg.)