Hokiyama Gyuto Tsuchime 240mm (9.5")
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Hokiyama Gyuto Tsuchime in 240mm (9.5") blade length is a knife suitable for professional users and those home cooks who know how to treat and maintain high-carbon knives. This knife will impress with a long-lasting sharpness and easy sharpening. The gyuto shape is essentially a Japanese version of a Chef's knife, making this knife suitable for preparing large quantities of vegetables and meat. Due to its blade length, it is recommended for experienced chefs and all those who are used to wielding longer knives.
The upper part of the blade is black and was left untreated. This scaly residue remains on the blade after the process of heat-treatment of the steel and is called kuro-uchi. Kuro-uchi patina brings a unique and rustic appearance to the knife.
The core of Gyuto Tsuchime knife is Hitachi's Super Blue Steel (Aogami Super), which ranks at the very top of quality Japanese steels. Aogami Super steel is extremely rich in carbon content, which directly affects the blade's hardness. It also contains 0.4% vanadium which gives the steel more toughness.
Aogami Super is rated as the most advanced carbon steel on the market. High-carbon steels need more maintenance as they quickly develop a protective patina, and if not wiped and dried after every use, they will develop rust. But - Hokiyama made it a bit easier for us. The two outer layers of softer, SUS405 steel are rust-resistant, which offer more protection from rust, although the Aogami Super is still exposed at the very edge (the visible, curvy line on the bottom of the blade represents the line between core and outer steels).
This Hokiyama Gyuto Tsuchime was heat-treated to the hardness of around 63 HRC. It is extremely hard steel, meaning that it retains super fine sharpness for a long time despite its extensive usage. In addition, due to the high carbon content, the knife is very easy to sharpen.
The knife was fitted a western-style (Yo) ergonomic handle made of durable laminated pakka wood, secured to the tang with three stainless rivets. The also stainless nickel-silver bolster gives the knife a gentle transition from the handle to the blade and provides a comfortable and firm grip during use.
Hokiyama Hamono is a leading smithery in Kochi Prefecture in Japan. They have recently celebrated their 100-year anniversary, founded in 1919. Hokiyama Hamono is known for their quality as they follow the tradition of hand-made blades that has been around for over 800 years. They retain the handiwork and traditional craftsmanship that is passed down from generation to generation while striving for the ever-new knowledge and innovation. Despite the fact that they make knives according to the traditional methods, they follow the modern technological guidelines in the field of metallurgy, material processing and innovations in production processes. Hokiyama, in their own words, is a fusion of tradition (土佐 一), innovation (無限) and practicality (左近).
Each knife in the smithery goes through about 50 different processes that are performed and controlled by experienced craftsmen. Among the various steps required to make a Hokiyama knife is a special process called Rolling-Forging. It enables the efficient and uniform production of knives while maintaining the properties and qualities of Japanese steel.
|Steel type:||Aogami Super|
|Hardness (HRC scale):||63|
|Overall length:||375mm (14.8")|
|Blade length:||240mm (9.5")|
|Spine thickness:||2.0mm (0.08")|
|Weight:||250g (8.8 oz)|
|Handle length:||125mm (4.9")|
|Handle type / wood:||Western / Pakka wood|
Use & Care:
- Handwash in warm water and towel dry
- Use a sharpening stone (not a honing steel!) to sharpen your knife
- Do not cut frozen foods and meat bones
- Do not put the knife in a dishwasher
- Read our comprehensive guide on proper Maintenance of Kitchen Knives.
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