Four names for double-bevel Japanese knives, two of which are the same knife. The differences that matter are the tip, the profile, and whether the blade is handed at all.
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Wikipedia is unusually direct about the first pair: the santoku bōchō and the bunka bōchō are the same general-purpose knife, and the difference is the tip. A santoku has a sheep’s-foot tip, curving down to a point at close to 60 degrees; a bunka has a k-tip, a reverse tanto. The gyuto is the Japanese take on the Western chef’s knife, with more curve along the edge, which is what lets it rock rather than chop.
The one that is not interchangeable is the vegetable knife. A nakiri and an usuba look alike — flat-edged, rectangular — but Wikipedia puts them on opposite sides of the divide this site keeps returning to: the nakiri is sharpened ryōba, from both sides, and is described as a knife for home use, while the usuba is kataba, ground on one side. So a nakiri suits either hand and an usuba does not. If you are choosing a vegetable knife and the listing says only “Japanese vegetable knife”, that is the fact it has left out.
Japanese kitchen knives on Amazon — the shelf ↗
One more thing follows from the same article. Traditional Japanese knives were single-bevel — kataba — and that remains dominant in professional Japanese kitchens; the double-bevel shapes above are the ones that developed for general and home use. The article also distinguishes them by geometry rather than by name alone: within the double bevels, some patterns are thicker at the spine and body than Japanese double bevels while being thinner just behind the edge, which changes how far the food has to bend as it is cut.
The name on the listing tells you the shape and almost nothing else. Two things decide whether the knife suits you and both are often missing: the grind — single or double bevel, which is the difference between a knife that works in either hand and one that does not — and the steel, carbon or stainless, which is the difference between a blade that wants drying after every use and one that does not. The two guides below cover those.
Japanese kitchen knives on Amazon — the shelf ↗
A shelf rather than a recommendation. Which shape suits you depends on how you cut, which is not something a page can decide for you — and the shape is the part listings usually do state correctly. It is the grind and the steel that go unmentioned, so those are what to look for once you are there.
SourcesThe scent exists because the tree was infected. Uninfected wood is pale and light — whatever was added.
There is no dominant standard behind the number. Two #1000 stones can cut differently.
Glass dents, rolls and chips edges rapidly. Wood is self-healing — but grain matters more than "hardwood".
JIS defines it — and the definition says most washi today is machine-made from chemical pulp.
Carved from a single piece, so a snapped tine is not a repair. The tine count is a spec, not a score.
Not a quality ladder. Natural hair holds powder; synthetic is built for cream and liquid.
ISO and Japanese labelling define how matcha is made. Neither defines a grade.
Ground on one side only. The wrong side does not cut badly — it does not work.
Blue holds an edge longer and is harder to sharpen. Which is better depends on how often you sharpen.
One protects the blade, the other eats it. Scrubbing the wrong one leaves the knife worse off.
Western knives sit at 52–58 and 20–22°; harder steel is what permits 15–18°. Higher is a different bargain.
Repair is subtraction — grind past the chip on a coarse stone, then work back up the grits.
A gifted knife is said to sever the relationship. The custom is that the recipient hands back a coin.
Friction-fitted, not bonded — so it can be replaced. And a D-shaped handle is made for one hand.
The usual fix starts by soaking it. A seiro maker calls soaking strictly forbidden.
Dishwasher, microwave, sunlight. All normal, all irreversible on urushi.
Uncured urushi gives most people a rash. Cured, reactions are possible but less common.
A prefectural institute put eleven lacquer films through JIS Z 2801. Most came back undetectable.
The original ceased production around 1900. Since 1973 the word has meant pattern welding — decoration.
It conducts heat badly. That is the product — and it is also why it cracks.
Unglazed clay is porous until rice starch seals it — one simmer, once.
Induction heats metal, not clay. Most donabe never get warm — and cannot be converted.
Real urushi cures in a humid box over days to weeks. A kit that sets in an hour is something else.
Not urushi against epoxy. Whether the material states food-contact compliance.
Pointed where Chinese ones are blunt. And two ordinary gestures read as funeral rites.
Sumi is soot held by animal glue. India ink needs no binder and dries waterproof on its own.
The body is impermeable. It is the decoration that is exposed — and you can feel which kind it is.
One boils water and gives you iron. Putting the other on heat cracks its lining for good.
The spots appear in the first week. The makers’ association says do not take them off.
The form is settled by a 2003 paper. The amount is not settled by anything.
