Pork Primals Guide: A Butcher’s Map of the Hog

A whole hog looks complicated until you learn the four primals it breaks into. Once you know where the shoulder, loin, belly, and leg sit, and how hard each one works, you can predict how any pork cut wants to be cooked before you read a single recipe. This page walks the hog from front to back and links to a full guide on every primal and the cuts within it.

How the hog breaks down

Start at the front. The shoulder carries the pig’s weight and works all day, so it is dense with fat and connective tissue and built for low, slow cooking. Along the top of the back sits the loin, the tender strip that gives chops, the tenderloin, and roasts, plus the back ribs. Under the loin hangs the belly, the fatty underside that becomes bacon, fresh pork belly, and spare ribs. At the rear is the leg, a large section sold fresh as ham or cured into the hams and steaks most people know. One rule holds it together: the harder a section works, the more it needs time and moisture, and the less it works, the better it takes a fast, hot cook.

The four primals and their cuts

Tender cuts versus tough cuts

The loin is the tender group, and it lives on quick cooking. Chops and tenderloin want a hot pan or grill and a pull at 145F, followed by a short rest. Push them past that and they dry out, because the loin carries little fat. The shoulder and belly are the tough, rich group, dense with collagen that only softens after hours of gentle heat. Braise, smoke, or slow roast them, and the connective tissue turns to gelatin and the meat goes soft. Ribs bridge the two, technically from the loin and belly but cooked low and slow like the tough group.

Matching cut to method

Remember these pairings and pork gets easy. Loin cuts go with pan searing, grilling, and quick roasting. Shoulder, belly, and ribs go with braising and smoking. The leg is usually roasted fresh or bought cured. Ground pork, mostly from the shoulder, cooks through to 160F and shows up in sausages, meatballs, and meat sauce.

Frequently asked questions

How many pork primals are there?

Four working primals: shoulder, loin, belly, and leg. Butchers break these into familiar cuts like the Boston butt, the tenderloin, spare ribs, and ham.

Which pork primal is best for pulled pork?

The shoulder, specifically the Boston butt. Its fat and collagen make it ideal for a long, slow cook.

Where do pork chops come from?

The loin. Chops are cut across the loin, sometimes bone-in, and cook fast and hot.

What primal is bacon from?

The belly. Bacon is cured and smoked pork belly, sliced thin.

Ground pork and specialty cuts

Beyond the four primals, a few pork products are worth knowing. Ground pork, usually milled from the shoulder and trim, is the base of fresh sausage, meatballs, dumplings, and the pork share of a meat sauce, and it cooks through to 160F. Pork jowl, from the cheek, is cured into guanciale, the soul of a true carbonara. Trotters and hocks are rich in collagen and turn a pot of beans or broth silky. And the skin, scored and roasted, becomes crackling, one of the great rewards of cooking a whole belly or leg with the rind on.

How to buy and store pork

Color and fat tell the story. Look for pork that is a deep pink to rose rather than pale and watery, with firm white fat and visible marbling in the fattier cuts. Heritage breeds and pasture-raised pork carry more of that fat and far more flavor, and we think they are worth the premium. Ask the butcher which cut suits your dish and how the pig was raised. Keep fresh pork cold and use it within a few days, or freeze it well wrapped. To find pasture-raised pork near you, start with our Find a Farmer directory.

Why the fat matters

More than beef or lamb, pork lives and dies by its fat. The primals that carry the most, the shoulder and the belly, are the ones that reward slow cooking, because that fat bastes the meat from the inside as the connective tissue melts. The leaner loin has to be treated with more care, since there is little fat to protect it from the heat. This is also why breed and farming show up so clearly on the plate. A heritage pig raised on pasture lays down more intramuscular fat, so even a lean loin chop stays juicy and tastes of something. A cut from a lean commodity pig gives you less room for error and less flavor to begin with. When you shop the primals, let the fat guide you: buy the fattier cut for a long cook, and seek out well-marbled loin for a quick one.

Ribs, and where they come from

Ribs cause more confusion than any other pork cut, so it is worth being clear. Baby back ribs come from the top of the loin, where the ribs meet the spine, and they are leaner and more tender. Spare ribs come from the belly side, lower down, and they are meatier and fattier. St. Louis ribs are simply spare ribs trimmed square. Country-style ribs are not really ribs at all but meaty strips cut from the shoulder end of the loin. All of them want the same low, slow treatment, which is why we group them with the tough cuts even though they span two primals.

Learn more

New here? Start with the pork overview, learn the methods in our recipes and guides, or find pasture-raised pork with Find a Farmer.