Japanese kitchen knives 包丁

What shape do you actually need?

Start with the job you actually do most, since each shape below is built for a specific task rather than competing to be the one knife you own. A gyuto is the Japanese take on a Western chef's knife, used across meat, fish and vegetables; Wikipedia's entry on Japanese kitchen knives puts the general blade size at 20cm to 27cm, and Tojiro's own guide to its shapes sizes a home cook's gyuto at 160mm to 240mm. A santoku is shorter and flatter, which Wikipedia describes as derived in the 1940s from the best traits of the deba, nakiri and gyuto combined into one general purpose shape; Tojiro sizes a home santoku at 165mm to 180mm. A bunka is a santoku with a sharper k-tip in place of the rounded sheep's foot point, which Wikipedia calls a reverse tanto shape. A nakiri is built only for vegetables, with a flat edge and a square tip that Wikipedia says makes the knife feel more robust than a gyuto or santoku's pointed tip; Tojiro sizes a home nakiri at 150mm to 180mm. A petty is the small paring and trim knife that sits beside a gyuto, sized 90mm to 180mm for home use in Tojiro's own guide, and a sujihiki is a longer slicing knife for portioning meat, sized 210mm to 240mm. Deba and yanagiba differ in kind rather than just size: both are single bevel shapes built around fish, a deba thick enough to cut through small bones and a yanagiba long and thin for slicing sashimi. Our Hatsukokoro, Nigara, Sakai Takayuki, Tojiro and Masutani Hamono hubs cover which of these shapes each maker actually cuts.

Stainless, carbon or powdered steel?

Steel is the biggest single trade off in a Japanese knife, and the five makers we carry between them cover all three broad families. Carbon steel, Wikipedia's entry on Japanese kitchen knives explains, is generally harder and sharper but more brittle and corrodes more easily, split into white steel, purified away from phosphorus and sulfur, and blue steel, alloyed with chromium and tungsten for extra edge life; our Hatsukokoro hub carries both Aogami and Shirogami carbon lines, and our Nigara hub runs Aogami Super, all of which need drying and light oiling after every use. Stainless steel trades some of that sharpness for toughness and easier care. VG10 is the stainless most of our makers reach for, and Tojiro's own materials page rates it excellent for hardness, sharpness and re-sharpening thanks to purified cobalt in the alloy. Powdered steel sits at the high end of stainless: Wikipedia describes the process as breaking large carbides apart by powdering the metal, then sintering it back together under high pressure and heat, and our Nigara hub names SG2, also called R2, as the forge's own pick for the best balance of edge retention, toughness and ease of sharpening among powdered steels. Carbon takes the keenest edge and needs the most attention; stainless asks the least of you; powdered steel sits between the two on upkeep while holding an edge the longest.

Single bevel or double bevel?

Most knives sold outside Japan, and most of what we carry, are double bevel, ground symmetrically the way a Western chef's knife is. Wikipedia calls this ryōba, and notes that double bevel Japanese knives are still often ground to a Japanese-style acute edge of 8 to 10 degrees per side, tighter than a typical Western edge. A single bevel knife, kataba, is sharpened almost entirely on one face, the omote, with a hollow ground into the back, the urasuki, that releases food as it cuts; Wikipedia describes honbazuke as the initial sharpening that forms a flat surface along the urasuki's perimeter and sets the shape for every sharpening after it. Our Hatsukokoro and Sakai Takayuki hubs both carry single bevel deba and yanagiba lines, and both are direct that a single bevel edge rewards a slower, more deliberate technique than a double bevel gyuto or santoku. If you are buying your first Japanese knife, a double bevel shape is the easier place to start.

Wa handle or yo handle?

A wa handle is the traditional Japanese style, usually turned from ho wood and friction fitted onto a hidden tang rather than bolted through it, most often an octagon in cross section, Wikipedia's entry on Japanese kitchen knives explains. A yo handle is the Western style instead, with a bolster and a full or partial tang running through a heavier, resin cured or synthetic handle scale. Our Hatsukokoro and Nigara hubs both run wa handles, octagonal black chacate or ebony among them, while Masutani Hamono's entire range sits on a Western handle instead. A wa handle suits a lighter, more blade-forward feel and an easy handle swap; a yo handle suits a heavier, handle-forward grip. Neither wins outright, and several makers sell the same steel in both.

What do we carry, and where should you start?

Five makers, each with its own regional character. Hatsukokoro is a brand rather than a single forge, commissioning lines from named smiths. Nigara forges in Hirosaki, Aomori, known for its Anmon Damascus pattern. Sakai Takayuki works out of Sakai, Osaka, a city whose cutlery cooperative separates forging and blade edging into two distinct trades. Tojiro makes knives in Tsubame, Niigata, pressing clad steel with a stamping machine rather than shaping every blank by hand. Masutani Hamono works in the Takefu district of Echizen, Fukui; it makes knives for home cooks rather than professional kitchens. Start from the shape and steel you actually need, then read the maker hub for the line that carries it. Browse the knife collection to see the current range, since what is on the shelf shifts as pieces sell through.

How do you keep it sharp?

A Japanese knife rewards more care than a stamped Western blade. Carbon lines need the fuller routine, rinsed and dried as you finish cutting and oiled before they go back in the drawer, while stainless and powdered steel lines mostly need only a hand wash and a dry cloth. Every maker we carry sharpens on a waterstone rather than a honing rod, since a thin, hard Japanese edge is more easily rolled than restored by a rod. Our sharpening a Japanese knife guide covers the whole routine, stone by stone, from the first coarse grit through to a strop.

Quick answers

These are the questions people ask us most often about choosing a Japanese kitchen knife, answered briefly.

What's the difference between a gyuto and a santoku? A gyuto is longer and more pointed, built for rocking cuts and fine tip work across meat, fish and vegetables; a santoku is shorter and flatter, a general purpose shape Wikipedia describes as combining the deba, nakiri and gyuto into one knife. Either covers most home cooking on its own.

Should I buy a carbon, stainless or powdered steel knife? Carbon takes the keenest edge but needs drying and light oiling after every use; stainless asks the least of you day to day; powdered steel, like SG2 or VG10, sits between the two, holding an edge longer than plain stainless while still being reasonably easy to maintain.

What is a bunka knife? A bunka is a variant of the santoku with a sharper, angled k-tip instead of a rounded sheep's foot point, which Wikipedia calls a reverse tanto shape. It suits the same general cutting work as a santoku, with more control right at the point.

Do I need a single bevel knife? Only if you are preparing whole fish or slicing sashimi regularly. A single bevel deba or yanagiba cuts cleaner for that specific work, but it takes a slower, more deliberate technique to sharpen and use than a double bevel gyuto or santoku, so most home cooks are better served starting with a double bevel shape.

Does a wa handle or a yo handle matter more? It comes down to grip and balance rather than one being better. A wa handle is lighter and easier to swap out; a yo handle, with its bolster and full tang, sits heavier in the hand and suits a cook already used to a Western chef's knife.