lamb, live sheep before the age of one year and the flesh of such an animal. Mutton refers to the flesh of the mature ram or ewe at least one year old; the meat of sheep between 12 and 20 months old may be called yearling mutton or hogget. The meat of sheep 6 to 10 weeks old is usually sold as baby lamb, and spring lamb is from sheep of age five to six months.

Flavor

Flavor preferences vary globally with the mild flavor of lamb having some preference in Western countries, while the stronger flavor of mutton is more desirable in many Middle Eastern countries. Milk-fed lamb is especially delicate in flavor. The color of the lean deepens as the animal grows older. In the lamb it ranges from light to dark pink; in yearling mutton it is medium pink to light red, and in mutton it is light to dark red in color. The fat, soft and creamy white to pale pink in the lamb, hardens and whitens in older sheep. Bones also harden and whiten, becoming porous in the yearling and extremely hard in the mature animal.

Cuts

In the United States the carcass may be separated into sides and then divided into wholesale cuts; it may be cut straight across into saddles; or it may be cut into leg, loin, shoulder, breast, and shank. The outer fat covering, or fell, may be removed from the cuts. U.S. quality grades for lamb include prime, choice, good, utility, and cull; mature mutton grades are choice, good, utility, and cull.

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Consumption and cuisine

The primary lamb- and mutton-consuming countries (on a per capita basis) are New Zealand, Australia, Greece, Uruguay, and Ireland. The leg, saddle (upper back portion of the carcass from last rib to legs), and shoulder, although they contain higher proportions of bone to meat, are considered the finest cuts by some cooks. In the United States popular cuts include individual chops from the ribs or loin, the leg, and the so-called crown roast, made by forming the rib section, or rack, into a circle. A regional specialty, virtually unknown outside of the state of Kentucky, is barbecued mutton. Curried mutton, served with rice, is a favorite dish of Jamaicans.

The traditional British lamb roast is distinguished by a fresh mint sauce. Lamb also plays an important part in classic French cuisine; unlike American- or English-style preparation, however, French recipes often call for shorter cooking times, yielding rare or pinkish meat.

Lamb predominates in the cuisines of Greece, Turkey, and the Middle East, commonly marinated and roasted on a skewer (shish kebab) or cooked with local vegetables. A classic Middle Eastern dish is kibbe, a mixture of ground lamb and cracked wheat.