Japanese Kitchen Glossary

The heel of the blade — the rear-most part of the cutting edge nearest the handle. Used for heavy-duty cutting tasks requiring more force.

Premium high-carbon steel with tungsten and chromium additions. Harder than White Steel, excellent edge retention with slightly more difficulty in sharpening.

A more forgiving version of Blue #1 with slightly less carbon. Balances edge retention with easier sharpening, making it popular among serious home cooks.

The pinnacle of Hitachi's Blue Steel line. Contains added molybdenum and vanadium for extreme hardness (65-67 HRC) and edge retention.

A step above AUS-8 with higher carbon (~1.05%). Provides better edge retention while maintaining good stainless properties. Comparable to VG-10 at a lower cost.

A Japanese stainless steel with moderate carbon content (~0.75%). Offers decent edge retention, good corrosion resistance, and easy sharpening at an accessible price point.

A long serrated knife designed for slicing bread and other baked goods without crushing. The Japanese term pan-kiri literally means bread cutter.

A general-purpose knife similar to a Santoku but with a more angular, pointed tip (k-tip or reverse tanto). Typically 165-180mm.

A Japanese wa-handle shape with a D-shaped cross-section, designed for right- or left-handed use. Provides a natural, comfortable grip orientation.

A layered steel construction where multiple types of steel are forge-welded together, creating distinctive wavy or swirling patterns on the blade surface.

As a finish style, Damascus refers to the visible pattern created by etching multi-layered steel. Ranges from random waves to precise ladder or raindrop patterns.

A thick, heavy single-bevel knife (150-210mm) designed for breaking down whole fish — cutting through bones, removing heads, and filleting. The workhorse of Japanese fish butchery.

An ultra-thin, flexible knife specifically designed for slicing fugu (pufferfish) into paper-thin translucent slices (usuzukuri). Narrower and thinner than a standard yanagiba.

A stainless steel developed as a substitute for carbon steels. Takes a very keen edge similar to White #2 but with added corrosion resistance. ~0.95% carbon with ~13% chromium.

The Japanese equivalent of a Western chef's knife. A versatile, all-purpose blade (180-270mm) with a curved profile suitable for both rocking and push-cutting techniques.

The cutting edge of the blade — the sharpened portion that does the actual cutting work. Can be single-bevel (kataba) or double-bevel (ryoba).

The hard core steel in a laminated blade that forms the actual cutting edge. Typically a high-carbon steel like White or Blue Steel.

The visible temper line on a blade created during differential hardening (yakiire). Marks the boundary between the harder edge steel and softer spine steel.

A high-speed powder steel by Hitachi with exceptional wear resistance and hardness (67-68 HRC). Contains tungsten and cobalt for extreme edge retention.

The very edge line of the blade — the thin, sharpened strip at the bottom of the primary bevel. This is where the blade meets what it cuts.

The final sharpening and edge-setting process performed on a finished knife. Translates to true edge attachment — it transforms a ground blade into a cutting tool.

A short (140-165mm), stiff, triangular boning knife used for poultry butchery. The pointed tip navigates around joints and bones with precision.

A blade forged entirely from a single piece of high-carbon steel, differentially hardened using a clay-coating technique. The pinnacle of Japanese bladesmithing.

The Rockwell C scale measures blade steel hardness. Japanese knives typically range from 58-67 HRC. Higher numbers mean better edge retention but increased brittleness.

A skilled Japanese chef, particularly one specializing in traditional Japanese cuisine (washoku). Literally means in front of the board.

The soft iron or low-carbon steel cladding that surrounds the hard cutting core (hagane) in laminated blades. Provides structural support and resilience.

The thin, flexible metal ridge that forms on the opposite side of a blade during sharpening. Indicates the edge has been sharpened to the apex.

The ferrule — a collar (often made of buffalo horn, wood, or plastic) between the blade tang and the handle. Reinforces the joint and prevents splitting.

A blade construction using two layers — a hard carbon steel edge welded to a softer iron body. The name means mist, referring to the hazy appearance of the soft iron cladding.

The technique of rotary-peeling a cylindrical vegetable (like daikon) into a continuous paper-thin sheet. A fundamental test of knife skill in Japanese culinary training.

The primary bevel — the angled surface ground into the blade that leads down to the cutting edge. On single-bevel knives, this is the flat, wide bevel on the front face.

A prestigious multi-purpose knife combining features of the yanagiba and usuba. Traditionally single-bevel and reserved for the head chef only.

The tip or point of the blade. Critical for detail work like scoring, trimming, and precision cuts.

A rustic blacksmith finish where the dark forge scale is left on the blade above the cutting edge. Provides mild food release benefits and corrosion resistance.

The notch or step between the blade and the tang. Acts as a bolster area, providing a visual and physical transition point between blade and handle.

A polished, mirror-like blade finish achieved through progressive hand-polishing. Provides excellent food release and corrosion resistance.

A fine chopping technique producing very small, uniform pieces. Performed with rapid up-and-down cuts while pivoting the blade tip on the board.

A French term universally used in professional kitchens meaning everything in its place. All ingredients prepped, measured, and organized before cooking begins.

A class of Japanese stainless steels containing molybdenum for corrosion resistance. Often used in affordable, low-maintenance kitchen knives with decent performance.

The spine of the blade — the thick, unsharpened top edge opposite the cutting edge. Spine thickness affects blade weight, rigidity, and cutting geometry.

A small, hard stone rubbed against a finishing whetstone to create a slurry that improves polishing action. Essential for getting the most from natural finishing stones.

The tang — the portion of the blade steel that extends into the handle. Can be full-tang or partial/hidden tang (common in wa-handles).

A double-bevel vegetable knife (160-180mm) with a tall, flat blade profile. Designed exclusively for vegetables — the flat edge excels at clean push-cuts through the board.

A thin-slicing technique producing uniform, translucent slices. Used for vegetables, fish, and meat where presentation and even thickness are paramount.

A textured blade finish resembling the skin of a Japanese pear (nashi). Created through acid etching or controlled oxidation for food release and scratch concealment.

A two-layer laminated blade construction — one layer of hard cutting steel backed by one layer of softer, more flexible steel. Simpler than san mai.

A wa-handle with an octagonal cross-section. Provides multiple grip surfaces for excellent control and a premium feel.

The Japanese term for a bread knife, literally meaning bread cutter. Features hardened serrated teeth that stay sharp longer than Western equivalents.

A small utility knife (80-150mm) — the Japanese version of a paring or utility knife. Versatile for in-hand work, peeling, trimming, and small precision cuts.

A slicing technique where the blade is drawn backward toward the user in a single smooth stroke. Produces cleaner cuts than push-cutting, especially on proteins.

A cutting technique where the blade is pushed straight down and slightly forward through the food. The standard technique for vegetables on a cutting board.

A rolling oblique cut used on cylindrical vegetables. The vegetable is rotated 90 degrees between each diagonal cut, creating irregular pieces with maximum surface area.

A Western-style cutting technique where the blade tip stays on the board while the heel rocks up and down. Efficient for herbs, garlic, and rapid mincing.

Three-layer laminated blade construction — a hard core steel (for the cutting edge) sandwiched between two layers of softer, more resilient cladding steel.

The three virtues knife — designed for meat, fish, and vegetables. A shorter, lighter alternative to the gyuto (160-180mm) with a flatter profile and sheepsfoot tip.

A shaving cut used to create thin, irregular shavings from root vegetables like burdock (gobo). The vegetable is shaved as if sharpening a pencil.

The pulling cut technique specific to slicing sashimi. A single, smooth, heel-to-tip draw stroke that preserves the cellular structure and texture of raw fish.

A julienne technique producing thin, uniform matchstick-shaped cuts. Sen means thousand, referring to the many fine strips produced.

A premium powder metallurgy stainless steel by Takefu Special Steel. High hardness (63-65 HRC), excellent edge retention, and good corrosion resistance. Contains cobalt.

The shinogi line — the ridge where the primary bevel meets the flat of the blade. Defines the blade geometry and affects food release.

The purest of Hitachi's carbon steels with the highest carbon content (~1.3%). Takes an exceptionally keen edge and sharpens beautifully.

The most popular traditional carbon steel for Japanese knives. Slightly less carbon than #1 (~1.1%), offering excellent sharpness with a bit more toughness.

A diagonal slicing cut where the blade approaches the food at an angle, producing wide, thin, oblique slices. Commonly used for fish fillets and vegetables.

A long, narrow slicing knife (240-300mm) — the double-bevel alternative to the yanagiba. Designed for slicing boneless proteins, roasts, and sashimi with minimal drag.

A blade pattern meaning floating ink — referring to the flowing, marbled pattern seen in some Damascus blades, inspired by the traditional Japanese paper marbling art.

A long, thin sashimi knife with a squared-off tip, traditional to the Kanto (Tokyo) region. Functionally similar to the yanagiba but with a distinctive blunt end.

The art and process of sharpening. Encompasses everything from basic edge maintenance to professional-grade polishing on natural stones.

A master sharpener — a professional specializing in sharpening and restoring knives to their optimal condition. A distinct and respected trade in Japan.

A sharpening whetstone. Japanese waterstones are graded by grit: coarse (under 1000) for repairs, medium (1000-3000) for sharpening, fine (4000+) for polishing.

A hammered finish created by striking the blade surface with a ball-peen or textured hammer, leaving visible dimple marks. Improves food release by creating air pockets.

The back (concave) side of a single-bevel blade. Features a shallow hollow grind (urasuki) that reduces contact area and aids food release.

The concave hollow on the back face of a single-bevel knife. This precise concavity is critical to the blade's cutting geometry and must be maintained during sharpening.

A single-bevel vegetable knife with a thin, flat blade (165-210mm). The professional counterpart to the nakiri, requiring more skill but capable of finer vegetable work.

A paper-thin slicing technique used for firm-fleshed fish like fugu, tai (sea bream), and hirame (flounder). Slices should be nearly translucent.

One of the most popular Japanese stainless steels. Contains vanadium, cobalt, and molybdenum for a balance of hardness (60-62 HRC), edge retention, and corrosion resistance.

A traditional Japanese-style handle, typically made from magnolia (ho) wood with a buffalo horn ferrule. Lightweight, comfortable, and easy to replace.

A sharpening stone used with water to grind and hone a blade edge. Japanese waterstones are softer and cut faster than Western oilstones.

The hardening process — heating blade steel to critical temperature and quenching it rapidly. This transforms the steel's crystal structure for maximum hardness.

The quintessential sashimi knife — a long (240-330mm), single-bevel blade designed for slicing raw fish with a single pull stroke. The name means willow blade.

A Western-style handle attached with rivets, typically made from wood, Micarta, or G10. Heavier than wa-handles, with the balance point closer to the hand.

An ultra-high carbon (~3%) powder steel capable of extreme hardness (66-68 HRC). Exceptional edge retention but challenging to sharpen and somewhat brittle.