Hatsukokoro x Yoshikane SKD Nashiji Santoku 170mm Ebony Handle

Both are all-purpose Japanese knives, and for most home cooks either will handle the bulk of daily prep. The choice comes down to length, blade shape, and how you like to cut.

A gyuto is the Japanese chef's knife, with a gently curved edge that lets you rock and slide through cuts as well as chop. Tojiro's guide to Western knife shapes gives 150 to 210mm as the household size for a gyuto and up to 360mm for professional use. The extra length and pointed tip give you reach and versatility, from proteins to large produce.

Tojiro's guide to Japanese knife shapes gives 165 to 170mm as the household size for a santoku, which has a flatter profile and a rounded sheep's-foot tip. It rewards a straight up-and-down push cut, feels nimble in smaller hands or tight kitchens, and is the classic Japanese household knife.

Rule of thumb: choose a gyuto if you want one do-everything knife with more reach, or a santoku if you prefer a compact, easy-to-control blade. Plenty of our customers end up owning both.

Match the shape to your stroke. Rock chopping keeps the tip on the board and rolls the curved belly through the food, so a gyuto or a Western chef's knife suits it, and Japanese knives rock fine as long as you rock gently.

Up-and-down chopping, the Chinese style, wants a straight run of edge, so a nakiri, usuba, santoku or bunka suits it better; a curved edge chopped straight down easily leaves pieces joined. Neither shape is better; it depends on how you cut.

A Japanese dictionary explains the name of the santoku (三徳包丁) as coming from the three things it handles: meat, fish and vegetables. The same dictionary entry points from the santoku to the bunka (文化包丁), treating the two as one knife.

One Japanese knife maker guide distinguishes the two by the tip. It says that in the Showa era the bunka was made with its tip cut at an angle, and the santoku came after it by rounding that tip.

SKD steel is a high-carbon, mid-chromium tool steel used in Japanese knives to deliver carbon-steel-like edge sharpness and ease of sharpening without the high maintenance requirements of traditional carbon steel.

This steel contains 1.0% carbon and 5.0% chromium, allowing it to be hardened to an HRC of 62–64 while maintaining a balance between edge retention and corrosion resistance. At K&S, it is available through the Hatsukokoro x Yoshikane collaboration, with options such as the SKD Nashiji Honesuki 150mm, the SKD Nashiji Gyuto 240mm, and the SKD Nashiji Sujihiki 270mm. These knives are best suited for professional chefs or serious home cooks who want a keen edge and simple sharpening process but prefer not to deal with the rusting issues common to pure carbon steels.

Yoshikane's own company page dates the founding to Taisho 8, 1919, when Kanekichi Yoshida started the business in Shimotajima, Sanjo.

The same page records the fourth generation, Kazuomi Yamamoto, taking the name in 2013, and the company's incorporation as 株式会社吉金刃物 in 2022.

Both forms are correct, for two different things: the company writes its own name 吉金刃物, as the maker's site shows.

That page also records 吉兼 and 吉兼久 as the workshop's own brands, added in 1922.