Most kosher beef comes from the front half of the cow. The animal is typically divided between the 12th and 13th ribs, and nearly everything behind that line is sold to non-kosher markets. This isn’t because the hindquarter meat is inherently unkosher, but because removing the prohibited nerves and fats back there is so labor-intensive that most producers skip it entirely.
The Forequarter and Hindquarter Divide
A cow has two broad sections that matter for kosher purposes: the forequarter (everything from the neck through the 12th rib) and the hindquarter (the 13th rib back through the rump and legs). The forequarter is where virtually all kosher beef sold in the United States and Europe comes from. It yields five main primal cuts: chuck, rib, foreshank, brisket, and plate.
The hindquarter contains most of the cow’s forbidden fat and the sciatic nerve, both of which must be completely removed before the meat can be eaten. In theory, hindquarter cuts like sirloin and filet mignon can be made kosher through a painstaking process called nikkur (porging). In Israel, trained specialists do perform this work, making hindquarter cuts available. In the U.S. and most of Europe, however, the cost and difficulty aren’t worth it commercially, so hindquarters are simply sold to non-kosher markets.
What Makes a Part Forbidden
Three categories of tissue must be removed from any kosher cut of beef: forbidden fats, the sciatic nerve complex, and blood. Each has its own biblical origin and its own practical consequences for which parts of the animal you’ll find at a kosher butcher.
Forbidden fats, called chelev, are the visceral fats that sit in globs around organs rather than being woven into muscle. Think of the hard, white fat deposits around the kidneys and intestines. These are distinct from the strips of fat marbled through a steak or layered between muscles, which are permitted. The biblical prohibition traces back to the Temple sacrifices: these visceral fats were burned on the altar and designated as unfit for human consumption. Because the heaviest concentration of chelev sits behind the diaphragm in the hindquarter, that’s the primary reason the industry draws the line where it does.
The sciatic nerve, known in Hebrew as the gid hanasheh, runs through each of the animal’s hind legs. This prohibition comes from the story of Jacob wrestling an angel and being injured in the hip socket. Every trace of the sciatic nerve, the outer sinew of the thigh tendon, and the fat covering the nerve must be removed. The prohibition applies equally to male and female animals. Removing the nerve cleanly, without leaving any fragments behind, requires a specialist called a menaker or porger who has trained specifically for this work.
Blood is forbidden throughout the entire animal, not just in specific cuts. All kosher beef must go through a process of soaking and salting to draw out residual blood. The meat is soaked in cold water for 30 minutes, rinsed, then covered liberally in coarse salt for one hour. After that, it’s rinsed three times in cold water to remove all the salt. This applies to every cut from every part of the cow.
Organs, Tongue, and Liver
Organ meats from the cow are kosher, provided they come from a properly slaughtered animal and are prepared correctly. Tongue and liver are traditional staples of kosher cooking (think chopped liver and corned beef tongue). Liver gets special treatment because it holds so much blood that regular soaking and salting can’t extract it all. Instead, liver must be broiled over an open flame, which draws the blood out through direct heat. The fats surrounding the liver should be removed at slaughter, and ideally the liver comes from an animal slaughtered within 72 hours. Fresh liver shouldn’t sit in its own blood for more than 24 hours before preparation.
The heart is also kosher but must be cut open and salted to release the blood pooled inside its chambers. Kidneys are permitted once the surrounding chelev is removed.
Common Kosher Cuts You’ll Find
Because kosher beef is limited to the forequarter, the available cuts are different from what you’d see at a conventional butcher. Here’s what the forequarter produces:
- Chuck: Shoulder roasts, stew meat, and ground beef. This is the most versatile kosher cut and shows up in everything from pot roast to meatballs.
- Brisket: The chest muscle, famous in both Jewish and barbecue cooking. Sold as flat cut or point cut.
- Rib: Includes rib steaks and standing rib roast. These are the premium kosher beef cuts.
- Plate: Sits below the rib section. Yields flanken (short ribs cut across the bone), a classic in Jewish cuisine.
- Foreshank: The front leg, typically used for braising and soups. Produces rich, collagen-heavy meat suited to slow cooking.
Even within these forequarter cuts, a trained porger must remove certain blood vessels, glands, membranes, and tendons. The area between the 10th and 13th ribs requires especially careful cleaning, with channels of fat and blood vessels traced and pulled out from one end of the meat to the other.
What “Glatt Kosher” Means
You’ll often see beef labeled “glatt kosher,” which refers not to the cut of meat but to the condition of the animal’s lungs. Glatt is Yiddish for “smooth.” After slaughter, a kosher inspector examines the lungs for adhesions, which are bands of scar tissue that may indicate a hole or weakness in the lung wall. An animal with a perforated lung is considered treif (not kosher) regardless of how the meat is butchered.
For Sephardic Jews, who follow the rulings of Rabbi Yosef Karo, the lungs must be completely smooth with no adhesions at all. For Ashkenazic Jews, there’s a tradition that allows up to two small, easily removable adhesions while still qualifying the animal as glatt. If an animal has more significant adhesions, some Ashkenazic authorities permit a process of peeling and testing them, potentially salvaging the animal as standard kosher (though not glatt). In practice, most kosher beef sold in the U.S. today is marketed as glatt kosher, and the term has become nearly standard rather than a premium designation.
Why Kosher Beef Costs More
The economics become clear once you see how much of the animal is excluded. Roughly half the cow (the entire hindquarter) is sold off to non-kosher markets in the U.S. The forequarter then requires skilled labor to remove forbidden fats, blood vessels, and connective tissues before soaking and salting even begins. Animals whose lungs don’t pass inspection are rejected entirely. All of this means a single cow yields far less kosher product than conventional product, and each pound requires significantly more processing time. The result is a smaller selection of cuts at a higher price point, which is why kosher cooking traditions have long centered on techniques like braising and slow-cooking that make the most of tougher, more affordable forequarter cuts.