Syousin Blue Frost Blue 1 Mizu-Honyaki Sakimaru Takohiki 330mm Special Set

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Syousin Blue Frost Blue 1 Mizu-Honyaki Sakimaru Takohiki 330mm Special Set

Syousin Blue Frost, Blue 1 Mizu-honyaki by Kenji Togashi. This is a unique item, you will get the same exact same blade as shown in the photos. 

The Syousin Blue Frost is a line of Blue 1 Mizu-Honyaki knives forged and sharpened by two of the best masters from Sakai, Japan: Kenji Togashi and Hirosugu Tosa. This is a custom line co-developed between Aoki Hamono and Knives and Stones, with the emphasis on top level fit and finish (one example is how the Kanji is engraved then polished again); it is also easily maintained with half mirror finish (Yanagiba) or non-mirror finish (Gyuto). The Blue Frost also comes with the most high-end octagonal handles that Knives and Stones has to offer, making the Blue Forst so unique that it is unrivaled by any other Japanese knife vendors. 







324 g 

Total Length

493 mm 

Tip to Heel Length

324 mm 

Blade Height at Heel

35 mm 

Width of Spine Above Heel 

3.9 mm 

Width of Spine at Middle of Blade

3.5 mm 

Width of Spine at about 1cm From the Tip

1.9 mm 


Blue 1 Mizu-Honyaki



Handle Design



About Hitachi Blue 1

Blue 1 Steel is one of those really-hard-to-forge steel types, with about 1.3% of carbon content, it can reach an incredibly high hardness of HRC 64+. However, Blue 1 steel has a very narrow heat treatment temperature band, making it prone to failure during the heat treatment process.

There aren’t that many bladesmith in Japan can conformably handle Blue 1 steel, let alone forging the Mizu-Honyaki (water quenching) in Blue 1 steel. Because of such difficulty, Blue 1 honyaki knives are usually rare and more expensive than other honyaki knives. So ever since I fell in love with Japanese kitchen knives, I always dreamed of one day owning one myself. This is the reason that when I was presented of the opportunity, I immediately decided to offer a line of Blue 1 Honyaki blades to you. 


Their maker

Kenji Togashi (Dento-Kogeshi)

Kenji Togashi is one of the most skilled craftsmen in Sakai. No matter what type of steel or profile I ask him to do, he will always handle it with ease. Blue Frost (Blue 1 Mizu-Honyaki) and White Fame (White 1 Mizu-Honyaki) are both forged by Togashi-san. Togashi-san runs a small workshop. Strictly speaking I can’t really call it small, since three sons and a couple apprentices are also working for him there (source), hence the Togashi-hamono should probably be called a big workshop. His workshop can handle pretty much everything in house: forging, heat-treating and even sharpening. I still remember the first time I went into his workshop, the very first thing that caught my sight was the huge number of knife profile templates, there are probably a hundred of them, each with their manufacturer, model and length written, and there are a lot of highly regarded brands amongst them (we probably all know the Suisin Densho line is one of many).


 Fig: Some knife profile templates haning in the wall of Togashi-san's workshop


Another very interesting find at his workshop is the forge that is specifically designed for those super long tuna knives. By long, I mean really LONG! I handled a couple of them that is taller than me (requires two persons to operate)! I have no idea how difficult to forge one of these extra long blades but think a­­­­bout the required sharpness, straightness and toughness; I am sure it can only be done by someone really knows his stuff.

Togashi-san started knife forging back in 1967 and was awarded the prestigious Dento-Kogeshi in 1996, which is quite early considering he is just in his 60s. With the older generation of master either retired or approaching retirement, Togashi-san is one of those very few masters in Sakai that are able to foget top quality blades with relative higher quantity. 


 Fig: Me holding two super long tuna knives (they sit on the floor) at Togashi-san's workshop.


Hirosugu Tosa (Dento-Kogeshi)

Hirosugu Tosa started his career in 1967 and was honored with Dento-Kogeshi in 1990, he is the main sharpener of the more premium blades at Aoki Hamono. The entire Syousin blades by Sakai Takayui (apart from Syousin Sakura) are carefully shaprened by Tosa-san.

I probably don’t need to go into details on how divine his sharpening skill is, since the years of experience just speaks for it. What I am particularly impressed by how open-minded he is. I have encountered many craftsmen, while very skillfully, has a hard time listen to what I really want, and are slow to make minor adjustments on the details that we ask for, particular on the fit and finish side of things. It is understandable because the Japanese market is not too fussed about the details we care for, which means often the sharpeners don’t understand the need of paying extra attention on the F&F. This was never an issue for Tosa-san. No matter how minor the details are, the message always gets through. For example, we often have many custom shapes (diamond shaped usuba honyaki is just one of many) and polishing requirements (a batch of knives would have full mirror, half mirror, different kanji engraving); he always gets the job done without any error. That just shows how he pays his attention to all the details of each knife. 


 Fig: Tosa-san demonstrating the sharpening process of Syousin Hienn Kritsuke Yanagiba.