Tsunehisa AUS8 Yanagiba 270mm Monosteel Kashi

A yanagiba (柳刃包丁) is a sashimi knife for slicing raw fish. A knife maker's guide says a sashimi knife cuts without breaking the fibres of the flesh, and that it is longer and narrower than other knives because slicing sashimi with crisp edges needs the length.

The whole length goes through one pulling cut. The Sakai cutlery association calls the yanagiba the sashimi knife used mainly in the Kansai region.

Size a yanagiba to the fish you prepare: a knife maker's guide gives 270 to 360 mm for professional use and 240 to 270 mm for home use, with 270 mm at home if you slice larger fish.

The guide says the whole length goes through one pulling cut, so do not choose too short a knife, and at home it points to the size of your board and your work space. We list the yanagiba (柳刃) from 210 to 360 mm, some made for left-handed use.

No. The Sakai cutlery association describes the yanagiba (柳刃包丁) edge as so acute that it cannot be used on hard things such as bones.

For bones the association describes the deba (出刃包丁), whose heel is used to hit them.

AUS-8 is made by Aichi Steel, whose page on stainless steels for blades groups the AUS grades with its 13-chromium steels. There, AUS-6M, AUS-8 and AUS-10 are the grades that add still more carbon and add vanadium and molybdenum, which Aichi says further improves hardness, wear resistance and tempering resistance.

By the JSSA's definition, stainless means 10.5% or more chromium, and the JSSA notes that stainless, strictly, means it rusts less, so wash the knife after use and dry it.

Tsunehisa (恒久) means permanence. Shibata Knives describes Tsunehisa as its original brand, and says it selects knives that will have a long life, inspecting each one before delivery. Its own words are that it delivers knives worthy of a permanent position in your home.

The brand is built on traditional Japanese forging techniques with modern materials, and Shibata Knives offers after-sales maintenance and sharpening for the line.

Tsunehisa is a brand, not a single smith or a workshop. Shibata Knives describes it as an original brand of the company, run by Takayuki Shibata, and Shibata Knives does not name the workshop that makes each line. The company inherits traditional Japanese forging techniques with modern materials, and experienced staff inspect each knife before it is delivered.

What stands behind each Tsunehisa knife is that selection and inspection, and the company offers after-sales maintenance and sharpening for the line.