On 25 September 2026 I searched one large Japanese knife retailer for the word honyaki. Two very different knives came back carrying the same two words in their specifications.
One is a 210mm gyuto in stainless steel with a plastic handle, for $117.99. The other is a 240mm yanagiba in stainless steel with an ebony handle, for $997.99. The spec line on the first reads Honyaki processed. The spec line on the second reads Honyaki processed & Mirror Finished.
If you have read anything in English about honyaki, you know what the word is supposed to mean: a knife hardened the way a Japanese sword is hardened, rare, difficult, the top of the craft. The English guides that answer this question, and the forum threads that sit beside them on Google, argue about whether that is worth a thousand dollars or more. They mostly assume the word itself is settled.
It is not. In Japan the word is used in two ways, and a Sakai knife shop says in plain Japanese that one of those ways is wrong. This article is about telling them apart before you pay, and then about whether the real one is worth it for you.
This is the twelfth piece in a series about the distance between what Japanese knives are called abroad and what they are in Japan. The one before it priced VG10 against SG2 on the same knife, and it found the same problem from another angle: the words on the box move the price more than the steel does.
What honyaki means, according to a knife maker that does not make one
Tojiro, the knife maker in Tsubame-Sanjo, published a Japanese explainer on the two ways a traditional Japanese knife is hardened. It is a useful source for one reason above all: Tojiro sells no honyaki to the public, so it has nothing to gain from making the word sound grand.
It defines the process like this:
焼き入れ前に刃先以外の「焼き」を入れない部分に焼き土や砥粒を厚く盛り、一度の焼き工程で、焼きの入っている部分と入っていない部分を作ります
Before quenching, clay or abrasive grit is packed thickly over every part except the edge, the parts that are not to be hardened, so that a single quench makes a hardened part and an unhardened part.
That clay, 土置き, is the whole point. It is also why the name exists:
この製造方法が日本刀の焼き入れ方法に似ていることから「本焼き」と呼ばれるようになったといわれています。つまり、「本焼き」以外の包丁は本当の焼きが入っていないというわけではないのです
It is said the name honyaki came about because this method resembles the way Japanese swords are quenched. In other words, it does not mean that knives other than honyaki are not properly hardened.
Read the second sentence again. The name translates loosely as true hardening, and Tojiro goes out of its way to say that the name is not a verdict on every other knife. It is a description of one technique.
And what it does not mean, according to a shop in Sakai
Sakai Ichimonji Mitsuhide is a knife house in Sakai that sells, sharpens and engraves knives. Its Japanese guide to honyaki, updated in August 2025, has a section headed with the question most buyers never think to ask:
本焼きと全鋼は違うの？ はい、全く違います。
Is honyaki different from zenko? Yes, completely different.
Zenko, 全鋼, means all-steel: a blade made from a single piece of steel with no softer jacket. That describes honyaki too, which is exactly why the two get confused. The shop explains where the line is:
こちらは全鋼と呼んでおり本焼きではありません。それはなぜかと言いますと、鋼を鍛造していないからです
We call this zenko, and it is not honyaki. The reason is that the steel has not been forged.
And it describes what zenko is instead:
材料をプレスで抜き取り、焼き入れをする洋包丁と同じ造りをしているのが全鋼になります
Zenko is made the same way as a Western knife: the blank is pressed out of the material and then hardened.
Tojiro draws the same line in its own words. Alongside honyaki and the clad kasumi construction, it names a third kind of Japanese knife, the cheaper grades made from a single layer of carbon or stainless steel, and it does not call them honyaki at all.
So by the account of a Sakai shop and a Niigata maker, a honyaki has three things: one steel, forged, and hardened under clay so that the edge is hard and the body is not. A single steel alone is zenko.
The $118 knife
The knife listed as Honyaki processed at $117.99 is the Masahiro MV Stainless Honyaki gyuto, 210mm. Masahiro is a maker in Seki, and its own Japanese site calls the range MV-本焼, MV-honyaki. So the word does not come from the retailer. It comes from the maker.
Here is what the maker publishes about that knife, from its own product page:
- Blade steel: its own high-carbon stainless, MBS-26, carbon 0.9 percent, chromium 13 percent, with molybdenum and vanadium.
- Hardness: HRC 58 to 59.
- Handle: acetal copolymer, a resin, with antibacterial additive. The range is listed under its commercial kitchen line and marked as HACCP compliant.
- Bolster: one piece with the blade. Sub-zero treatment: yes.
- Edge: finished by hand by a sharpener.
- List price in Japan: 19,250 yen including tax.
There is not one word about clay, or about a hardened edge and a softer body. The hardness is given as one range for the whole blade. I cannot see inside the factory, and I will not claim to know how every step is done. What I can say is that nothing the maker publishes describes the process that Tojiro and Ichimonji define as honyaki, and everything it does publish describes a practical, hygienic, stainless professional knife.
That is not an insult to the knife. It is a sensible product at a sensible price, and I say more about it below. The problem is only the word. In the broad Japanese usage, honyaki can mean little more than one piece of steel. In the strict Sakai usage, which is the one every English guide describes, it cannot. On the retailer page the two sit under the same search and the same spec phrase.
It is not only one maker. Jikko, another Sakai shop that sells real honyaki, opens its own guide by saying the knife is also called 一枚物, a one-piece knife. Even the specialists use the loose word next to the strict one.
The retailer has the same problem in its own explainer
Hocho-Knife, the shop both knives come from, and the one I have a partnership with, has a feature page on honyaki. Its first line says honyaki knives are forged solely from one material, high-carbon steel, called hagane, by a method similar to the one used for Japanese swords. That is the strict meaning.
Further down the same page, explaining construction, it says that Western knives and honyaki knives are the ones made entirely of a single material, like a carbon steel or a high carbon stainless steel, which we call all-steel, or all stainless. That is the loose meaning, in the same article.
Its honyaki category shows the same mix. On the day I checked it held 127 knives. 35 of them were the Masahiro MV range, from $70.99 to $253.99. The next cheapest were 18 knives from Suishin in Sakai, in Swedish INOX stainless, from $292.99, described as honyaki processed and made with Japanese traditional production technology, with no mention of clay and no quench named. I am not saying those are not honyaki. I am saying the listing does not tell you either way. The rest, 74 knives from Sakai Takayuki, Yoshihiro, Sabun and Satoshi Nakagawa, ran up to $4,973.99.
The $998 knife, and why stainless is not the test
It would be easy to conclude that real honyaki is carbon steel and anything stainless is an impostor. That is wrong, and the $997.99 knife shows why.
It is the Sakai Takayuki Ginkon yanagiba, 240mm, made by Aoki Hamono in Sakai. Its steel is ginsan, silver paper No. 3, a stainless steel. The retailer describes it as made through the traditional honyaki process in Sakai, mirror finished, with an octagonal ebony handle and a buffalo horn ring. It is single bevel, for right-handed use, and weighs 172g.
So the steel does not tell you. The process does. Stainless honyaki exists, and a carbon steel knife made in one piece can still be zenko. What separates them is the forging and the clay.
How to tell which one you are looking at
You cannot see forging in a photograph, so use the evidence the listing does give you.
- Look for the line. Tojiro says the boundary between the hardened and unhardened parts often shows faintly, like the hamon on a sword. Ichimonji says oil quenching tends to give a crisper line than water, according to its craftsmen. A real honyaki listing almost always shows it, because it is the one visible proof of the process.
- Read for clay, and for water or oil. Real listings name the quench: water-quenched, mizu-yaki, oil-quenched, abura-yaki. A listing that only says honyaki processed, with no quench and no line, has told you nothing.
- Check the shape and the price together. Tojiro says honyaki is used above all for sashimi knives like the yanagiba and takohiki, and is unsuited to anything that takes impact, like a deba. In that category, the 35 knives whose names include a water quench started at $1,029.99 on the day I checked. A $118 honyaki gyuto with a resin handle is, at best, the loose meaning.
Is the real one worth it? What the people who sell it say
Here the Japanese sources are more cautious than the English ones, and they are the ones that sell it.
Ichimonji, which makes and sharpens honyaki, describes it without romance:
とにもかくにも本焼きはガラス細工のような繊細な包丁です
Whatever else you say, honyaki is a delicate knife, like glasswork.
And then it reports what happens to new owners:
初めて本焼きを購入された方が使用中や研いでいる最中に刃が割れたと言う話をよく聞きます
We often hear from people who bought their first honyaki that the blade cracked while they were using it, or while they were sharpening it.
It names sharpening as the most common moment. A clad knife tolerates a rough hand on the stone. Sharpen a honyaki the same way, it says, and it will crack more often than not. It tells you to keep the blade on the centre of the stone, go easy with your fingertips, and never let the angle waver.
Tojiro puts the same risk in stronger terms. Correcting a honyaki after hardening is extremely difficult, it says, and a mistake can crack it badly or snap it in two. Resharpening carries the same danger. Its conclusion is the sentence I would put in front of anyone about to spend a thousand dollars:
鍛造の技術も上がった現在では全ての本焼き包丁が霞(合わせ)包丁に勝るといえない状況になってきています
Now that forging technique has improved, we have reached a point where it cannot be said that every honyaki knife beats a kasumi knife.
And its advice to professional cooks is not to use honyaki every day. Use a clad knife for the deba and the usuba, it says, and keep the honyaki for the moments that call for it, like the sashimi knife.
That matches what I wrote in the piece on blue and white steel. Honyaki is harder to make, not better at ordinary cooking. The price pays for the difficulty and the losses in the quench, and the owner inherits the fragility.
What I would buy
I do not buy knives to test them, and I will not pretend otherwise. What follows rests on what the makers publish, on listings and prices I checked myself on 25 September 2026, and on what a Sakai shop and a Niigata maker tell their own customers in Japanese.
For almost everyone: not honyaki. Buy a clad knife in a good steel and a proper 1000 grit stone, as the whetstone piece explains. That is what Tojiro tells professional cooks to use for most work.
If what you actually want is a one-piece stainless knife you never have to fuss over: the Masahiro MV gyuto 210mm, $117.99. It is in stock. Buy it for what it is, a hand-finished stainless professional knife at HRC 58 to 59 with a resin handle built for a commercial kitchen, and ignore the word on the box. In Sakai terms it is zenko. At that hardness it will be forgiving on the stone, which is the opposite of what a real honyaki is.
If you already sharpen well, you cut fish, and you want the real thing: the Sakai Takayuki Ginkon ginsan honyaki yanagiba 240mm, $997.99. It is in stock, its listing says it is made by the traditional honyaki process in Sakai, and because ginsan is stainless it spares you the rust routine on top of the sharpening risk. It is a single bevel knife for right-handed use, so read the piece on single and double bevels first. And read the Ichimonji warning twice: the most common time to crack one is on the stone.
Marked down: paying honyaki money for honyaki words. If a listing does not show the line and does not name the quench, it has not shown you honyaki.
Disclosure
I have four approved affiliate partnerships: two with knife retailers, Hocho-Knife and SharpEdge, and two with Japanese language-learning companies unrelated to knives. This page carries two tracked links to Hocho-Knife. At about 10 percent, the Masahiro gyuto pays me about $12 and the Ginkon yanagiba about $100.
The knife I tell most readers to skip pays me eight times more than the one I say is fine. You should weigh that when you read the section recommending the $997.99 knife, and notice that it comes with more warnings than praise.
Hocho-Knife excludes seven brands from its programme, and Tojiro is one of them, so I earn nothing from Tojiro, which is the main source for the definition used here. Tojiro does not sell honyaki to the public either.
My full affiliate disclosure is here.
Sources used here, all public: the Tojiro explainer 本焼きと霞, July 2019; the Sakai Ichimonji Mitsuhide guide 本焼き包丁, published September 2022 and updated August 2025; the Jikko guide to honyaki, March 2025; the Masahiro product pages for the MV-honyaki range; and the Hocho-Knife honyaki feature page, honyaki category and the two listings priced above, checked on 25 September 2026.