A single-bevel knife is made for one hand
A single-bevel knife is ground for one hand. Buying the wrong side is not an inconvenience — it does not work. The other mistakes on this site happen to a piece over time. This one is already there when the parcel opens, and no amount of care or sharpening changes it.
Own something else Japanese? Check what will destroy it →
Which hand it was ground for
Single-bevel knives (yanagiba, deba, usuba) are ground on one side only, so the edge geometry is handed. A left-handed cook needs a left-handed model. These are typically made to order and take longer to arrive; sources put the premium anywhere from 10% to 30% — so it is worth knowing before, not after.
Then the steel
Two knives can be the same shape, the same grind and the same maker, and still want opposite things from you day to day. This is the second question, and listings tend to answer it as a performance claim rather than a maintenance one.
- ●Carbon (Shirogami / Aogami). No chromium, so it rusts — wet carbon steel can spot within minutes. Takes a very fine edge, sharpens easily, holds it well, and develops a patina with use. Not for a dishwasher, not left in water, not used on lemons and other acidic food.
- ●Stainless. Practical for a home kitchen where rust maintenance is not wanted. Serious sashimi work still tends to prefer carbon.
A left-handed yanagiba — grind side and steel both stated ↗
Where to look
Single-bevel knives are made in several knife towns — Sakai, Seki and Echizen among the best known. Wherever you buy, two things need to be stated before you order: which hand the blade is ground for, and whether the steel is carbon or stainless. If a listing answers neither, that is worth an email before it is worth a purchase, because a left-handed blade is usually made to order and is not a return you can make casually.
A listing that answers both questions
This guide stayed unlinked for a while, because the listings checked earlier stated neither the grind side nor that carbon steel rusts — the two facts the page exists for, and linking past them would have contradicted everything above. This one states both outright, which is the only reason it is here.
- ✓Which hand. Its specifications read Blade Type: Single Bevel (Left-Handed), and the first bullet explains that the bevel and flat back are aligned for left-handed use. That is the fact most listings omit entirely.
- ✓Which steel. Blade Material: White Steel #2 (High Carbon Steel) — so it takes a very fine edge and it will rust if left wet. Both halves of that trade, stated on the page.
A left-handed yanagiba — grind side and steel both stated ↗
A specialist seller is the other place to look, and for this particular knife it is the more useful one. Hocho Knife sorts its catalogue by exactly the distinction above — it defines single edged as “sharpened on just one side of the blade surface” and files left-handed single bevels separately, currently 152 of them. It also says it normally holds them in stock and quotes a lead time when it does not, which is the part the made-to-order reputation above does not tell you.
Left-handed Japanese knives at Hocho Knife — a seller that stocks them ↗
A left-handed model is the harder thing to buy, which is why this is the one linked: right-handed single bevels are everywhere. It is not a recommendation of a maker — this site does not own or test knives. Sellers relist under the same address, so before ordering, find the blade-type and material fields on the page in front of you and confirm they still say what they say here.
SourcesThe other guides
Agarwood: the fake has a tell
The scent exists because the tree was infected. Uninfected wood is pale and light — whatever was added.
What a whetstone grit number does not tell you
There is no dominant standard behind the number. Two #1000 stones can cut differently.
The board decides how long the edge lasts
Glass dents, rolls and chips edges rapidly. Wood is self-healing — but grain matters more than "hardwood".
Santoku, gyuto, bunka, nakiri — and which is handed
Two of these are the same knife. And a nakiri suits either hand; the usuba it resembles does not.
Washi: what the word covers
JIS defines it — and the definition says most washi today is machine-made from chemical pulp.
A matcha whisk is one piece of bamboo
Carved from a single piece, so a snapped tine is not a repair. The tine count is a spec, not a score.
Goat hair or synthetic, for a Kumano brush
Not a quality ladder. Natural hair holds powder; synthetic is built for cream and liquid.
“Ceremonial grade” is not a standard
ISO and Japanese labelling define how matcha is made. Neither defines a grade.
White steel or blue: which carbon steel
Blue holds an edge longer and is harder to sharpen. Which is better depends on how often you sharpen.
Rust or patina: which one are you looking at
One protects the blade, the other eats it. Scrubbing the wrong one leaves the knife worse off.
What HRC on a knife listing buys you
Western knives sit at 52–58 and 20–22°; harder steel is what permits 15–18°. Higher is a different bargain.
A chipped knife: cause, and what repairs it
Repair is subtraction — grind past the chip on a coarse stone, then work back up the grits.
Giving a knife: the belief, and the coin
A gifted knife is said to sever the relationship. The custom is that the recipient hands back a coin.
The handle: porous, replaceable, sometimes handed
Friction-fitted, not bonded — so it can be replaced. And a D-shaped handle is made for one hand.
Mould on a bamboo steamer, and the answer English guides skip
The usual fix starts by soaking it. A seiro maker calls soaking strictly forbidden.
What destroys lacquerware
Dishwasher, microwave, sunlight. All normal, all irreversible on urushi.
Is urushi safe to eat from?
Uncured urushi gives most people a rash. Cured, reactions are possible but less common.
Urushi and bacteria: what was actually measured
A prefectural institute put eleven lacquer films through JIS Z 2801. Most came back undetectable.
Is a Damascus knife real? The word changed
The original ceased production around 1900. Since 1973 the word has meant pattern welding — decoration.
What a donabe is actually doing
It conducts heat badly. That is the product — and it is also why it cracks.
The step before a new donabe cooks anything
Unglazed clay is porous until rice starch seals it — one simmer, once.
Why a donabe does nothing on induction
Induction heats metal, not clay. Most donabe never get warm — and cannot be converted.
What is actually in a kintsugi kit
Real urushi cures in a humid box over days to weeks. A kit that sets in an hour is something else.
Eating from a kintsugi repair: what actually decides it
Not urushi against epoxy. Whether the material states food-contact compliance.
Japanese chopsticks: the point, and two gestures
Pointed where Chinese ones are blunt. And two ordinary gestures read as funeral rites.
Sumi or India ink: the binder decides
Sumi is soot held by animal glue. India ink needs no binder and dries waterproof on its own.
Porcelain and the dishwasher: where is the pattern
The body is impermeable. It is the decoration that is exposed — and you can feel which kind it is.
Tetsubin or tetsu-kyusu?
One boils water and gives you iron. Putting the other on heat cracks its lining for good.
Rust inside an iron kettle: the fix people look for is the damage
The spots appear in the first week. The makers’ association says do not take them off.
How much iron does an iron kettle actually give you?
The form is settled by a 2003 paper. The amount is not settled by anything.