Wagyu glossary

What the beef is cooked over, and why a restaurant bothers to name it. None of these words is a provenance claim.

Robata炉端

Cooking over charcoal at an open hearth, usually behind a counter, with the food passed across to the diner. Short for robatayaki, literally fireside cooking. Robata venues and the full explainer.

Binchotan備長炭

A dense Japanese charcoal, traditionally made in Wakayama from ubame oak, fired hot and then smothered so it burns long and steady with very little smoke or flame. It is called white charcoal for the pale ash coating left by that quenching, not for the colour of the fuel. Cooks value it because clean radiant heat sears a fatty slice without perfuming it with smoke, which is why yakiniku and robata counters advertise it.

Sumibi炭火

Charcoal fire, as opposed to gas. Sumibiyaki simply means grilled over charcoal, and a menu using the word is describing its heat source rather than the beef.

Kushiyaki串焼き

Food grilled on skewers. Yakitori is the chicken version; a Wagyu kushiyaki is a skewer of beef, usually one or two bites, ordered a few at a time rather than as a steak.

Teppan鉄板

The flat steel griddle, and the root of teppanyaki. A solid plate conducts heat differently from a grate over coals, which is why the same cut is often cut thicker for it. Teppanyaki venues.

How a kitchen turns Wagyu into a dish. Several of these are how a very rich beef gets served in a portion a person can finish.

Aburi炙り

Flame-seared, most often with a hand torch, so the surface browns and the fat softens while the inside stays raw or barely cooked. It is the standard treatment for Wagyu nigiri, where a full cook would waste the marbling and a fully raw slice would eat waxy. A menu saying seared, torched or blowtorched is describing the same technique.

Tatakiたたき

Seared hard on the outside for a few seconds a side, left rare within, then sliced thin and dressed, commonly with ponzu and aromatics. The contrast between the cooked crust and the raw centre is the point.

Nigiri握り

A hand-formed finger of seasoned rice with a topping laid over it. Wagyu nigiri is one of the most common ways a sushi counter serves beef, usually aburi and usually one or two pieces.

Sukiyakiすき焼き

Thin slices simmered in a sweet soy and mirin broth in a shallow iron pan, traditionally dipped in beaten raw egg. Sukiyaki venues and the full explainer.

Shabu-shabuしゃぶしゃぶ

Paper-thin slices swished through a plain simmering broth for seconds, then dipped in ponzu or sesame sauce. The plain broth is what separates it from sukiyaki. Shabu-shabu and hot pot venues.

Wagyu sandoサンド

A sandwich on soft milk bread with the crusts cut off. The Wagyu version is usually a breaded, fried cutlet (a katsu sando) served in halves, and it is a common way to sell a small amount of an expensive cut.

Katsuカツ

A cutlet coated in panko and deep-fried. Menchi katsu is the minced version. Frying a heavily marbled cut is a deliberate choice rather than a way to hide a poor one, though the crust does mute what the beef tastes like.

Donburi丼

A rice bowl with the topping served over it. Gyudon is the beef version. A Wagyu donburi puts a small quantity of rich beef over enough rice to carry it.

Gyutan牛タン

Beef tongue, sliced thin and grilled, a specialty strongly associated with Sendai. It is not one of the standard carcass cuts and is traded separately, so a Wagyu menu can carry tongue of a different origin from its steaks. Worth asking about rather than assuming.

Yukhoe

A Korean raw beef preparation, hand-cut and seasoned, often with pear and egg yolk. It appears on Wagyu menus alongside tartare and carpaccio as a raw option. Raw beef carries the usual risk for pregnant, elderly, very young and immunocompromised diners.

What arrives beside the beef. These are options a kitchen chooses, and none of them is a test of whether the Wagyu is real.

Tareたれ

A seasoned sauce for dipping or basting, soy-based and usually sweetened, with each house guarding its own formula. At a yakiniku table the choice is generally tare or plain salt, and salt is the usual recommendation for the fattiest cuts because the sauce competes with them.

Ponzuポン酢

A tart citrus and soy sauce, typically built on yuzu or sudachi. Its acidity cuts richness, which is why it is the default dip for shabu-shabu and for seared beef tataki.

Yuzu kosho柚子胡椒

A fermented paste of yuzu peel, chilli and salt, green or red depending on the chilli. A very small amount is enough. It is a common condiment for grilled beef because the citrus and heat read against the fat.

Sansho山椒

Japanese pepper, from a relative of the Sichuan peppercorn, citrusy with a light tingling numbness rather than simple heat.

Finishing salt

Salt added at the table rather than during cooking, often a flake or a smoked or seaweed salt. For a rich slice it is the most common recommendation, since it seasons without adding sugar or acid.

Words for the meat itself. Several are American menu names for a cut the site already explains under its Japanese one.

Tomahawk

A ribeye left on the whole rib bone with the bone scraped clean, so it looks like an axe. It is a presentation of a ribeye, not a separate cut, and the bone means a large share of the advertised weight is not edible. Ask the trimmed weight if you are pricing it against a boneless steak. The ribeye guide.

Flat iron

The American name for the top blade, from the chuck, with the central sinew removed. It is the same muscle Japanese butchery calls misuji. The misuji guide.

Picanha

The Brazilian name for the rump cap, also sold as coulotte or top sirloin cap, and the cut carved at a rodizio. Japanese butchery calls it ichibo. The ichibo guide.

Chateaubriand

A thick centre-cut portion of tenderloin, historically served for two. It is a portion of a cut rather than a cut of its own. The tenderloin guide.

Chuck roll

A large cut from the shoulder. It is where zabuton and misuji come from, and a menu selling Wagyu chuck is selling the primal rather than one of those named muscles.

Primal

One of the large sections a carcass is first broken into, such as the rib, the short loin or the chuck. Every named steak is cut from one of them, which is why the same muscle carries different names in different countries. The cuts guide.

Dry-aging

Holding beef uncovered in controlled cold and humidity for weeks. Moisture evaporates and the meat's own enzymes break down connective tissue, which concentrates flavour and tenderises, at the cost of weight and of a hard crust that gets trimmed away and thrown out. That loss is most of why aged beef costs more.

Wet-aging

Holding beef in a vacuum bag instead. The enzymes still work, but nothing evaporates and nothing is trimmed, so the result is tender without the concentrated flavour, and it is much cheaper. Most beef sold as aged in the United States is wet-aged.

Tallow

Rendered beef fat. Wagyu tallow is sold on its own as a cooking fat, and a trimmed Wagyu programme produces a lot of it.

Why heavily marbled beef behaves differently in the pan. This is the part most often overstated in marketing.

Intramuscular fat

Fat deposited inside the muscle itself, which is what marbling is, as opposed to the fat cap on the outside or the seam fat between muscles. Grading looks at this fat, not the others.

Oleic acid

The monounsaturated fatty acid that makes up the largest share of the fat in Wagyu, in a higher proportion than in most other beef. A fat richer in it tends to soften at a lower temperature, which is the honest version of the claim. It is worth being careful here: the further step, that oleic acid is what produces a distinctive umami or sweetness, is marketing rather than settled science, and this site does not repeat it.

Melting point

Wagyu fat softens at a lower temperature than typical beef fat, which is why a slice can feel like it renders on the tongue and why the meat is easy to overcook. Treat any single precise figure with suspicion: melting point varies by animal, by cut and by where on the carcass the fat sat, and the exact numbers quoted in marketing are not a standard.

BMS

Beef Marbling Standard, the 1 to 12 scale for how much marbling a Japanese carcass shows. It sits inside the quality grade rather than replacing it. The grading guide.

The words that actually decide whether a Wagyu claim means anything.

Bloodline血統

A line of descent within Japanese Black, usually named for the region or the foundation sire it traces to. Tajima is the best known because Kobe is drawn from it. A bloodline is a statement about ancestry and not about the grade of any particular animal.

Sire and dam

The father and the mother. Japanese registration records both, and American fullblood claims are expected to be DNA parent-verified to both, which is what separates a documented pedigree from a description. How claims are checked.

Fullblood, purebred and F1

The generational ladder for Wagyu outside Japan. Fullblood is 100 percent, purebred is a high percentage reached by breeding up, and F1 is a first cross, usually with Angus. The breeds guide.

Traceability number

The 10-digit individual identification number carried by Japanese cattle, which can be looked up to confirm the animal existed and where it was raised. It identifies an animal, so it is strong evidence, but only for the animal it names. Japanese Wagyu.

Certificate of authenticity

A document backing a Japanese Wagyu claim, carrying the grade, the farm and the identification number. Far stronger evidence than any adjective on a menu. A menu section merely headed A5 Certificate is not one, a distinction we have had to make on a live menu. How claims are checked.