Kitchen Knives
Jiro Nakagawa 240mm Gyuto: First Impressions of a One-Man-Show Japanese Knife
A handmade 240mm gyuto from Nagano blacksmith Jiro Nakagawa, built entirely in-house with a distinctive oily kurouchi finish and tagayasan handle.
Introduction
Some knives arrive with a story already attached. The Jiro Nakagawa 240mm gyuto is one of them. Made by a single blacksmith in the Nagano region of Japan, each knife is numbered, limited in quantity, and finished entirely by one pair of hands. This particular example, number 404, is a 240mm gyuto with a distinctive kurouchi finish and a handle made from tagayasan, also known as iron sword wood.
This review covers what makes the knife special, how it feels in hand, and how it performed in a real home-cooking scenario: preparing a full salad as the only knife used from start to finish.
What Makes Jiro’s Knives Different
Jiro Nakagawa works from the Nagano region of Japan and is, quite literally, a one-man operation. He laminates his own steel, forges in-house, and shapes the tagayasan Western-style handles himself. Nothing is outsourced. That level of control is rare, and it is also why availability is limited: only a small number of knives leave his workshop each month, each one individually numbered.
The steel is Yasuki white #1, a shirogami carbon steel core, clad in soft iron. The kurouchi finish is unique to Jiro’s work. Rather than a matte black, it reads as a greyish finish with a pleasant luster and distinctive pin marks across the surface. The overall effect is understated but immediately recognizable.

First Impressions in Hand
Out of the box, the first thing you notice is the construction. The spine and neck are super thick, then taper noticeably toward the tip, a distal taper that gives the knife balance where it matters. The edge is very fine, and the belly of the blade is exaggerated, scooping upward toward a tip that is more accentuated than on Jiro’s earlier designs.
The tagayasan handle is the other standout. It is very grippy and has a character you will not find on mass-produced knives. Despite the substantial weight, the knife feels surprisingly nimble. The hand still guides the knife rather than the other way around, and the whole package feels like a natural extension of the hand. It does not feel like a 240mm knife at all, which is high praise for anyone hesitant about longer blades.

The One-Knife Salad Test
To put the knife through a realistic home-cook scenario, the entire salad prep was done with this single knife: lettuce, cherry tomatoes, peach, everything. That included sweeping the blade across the board, something worth caution with an untested knife, since you do not yet know how the edge handles abrasion or how brittle the steel might be. It handled everything without issue.
This is the kind of test that matters more than a single-ingredient showcase. Most home cooks do not want to juggle three or four knives for one meal. A 240mm gyuto that can julienne, slice soft fruit, and chop lettuce without complaint earns its place on the board.

Things to Consider Before Buying
The limited production means these knives are not always easy to find, and pricing reflects the one-man-show reality: when output is small and demand is high, cost goes up. The carbon steel core also asks for more care than stainless, as shirogami steel will patina and can rust if neglected.
The 240mm length is another consideration. It is a generous blade, and while this one handles smaller than its size suggests, anyone unsure about longer gyutos should weigh their comfort level honestly.
Buying Advice
This knife makes sense for a cook who values handcrafted, small-batch work and wants a single versatile blade that can carry an entire meal prep. The combination of a fine edge, nimble feel despite the weight, and a one-of-a-kind finish makes it easy to live with day to day.

If you can accept the care requirements of carbon steel and the patience needed to acquire one, the Jiro Nakagawa 240mm gyuto is a knife that rewards the wait. It sits comfortably alongside other long gyutos while offering a feel and finish that is genuinely its own.
Conclusion
The Jiro Nakagawa 240mm gyuto is a handcrafted knife with a clear identity: thick spine with thoughtful distal taper, a fine edge, a grippy tagayasan handle, and a kurouchi finish unlike anything mass production can offer. It proved itself in a full salad prep as the only knife on the board, and it feels far more nimble than its size and weight suggest. For cooks seeking a limited, numbered, entirely in-house Japanese blade, this one is worth serious consideration.
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