What Is a Yanagiba Knife — The First Knife I Touch Every Shift

Every shift starts the same way. I take my Yanagiba out of my knife roll, check the edge, and start prepping fish.

Salmon, tuna, hamachi, sea bass — the Yanagiba is the first knife I reach for and the one I use more than any other for fish work. After years of daily use I know exactly what it does and why nothing else comes close for this specific job.

Here's everything you need to know about the Yanagiba — what it is, what it does, and when you actually need one.

What a Yanagiba Knife Is

Yanagiba means "willow blade" in Japanese — named for the long, slender shape that resembles a willow leaf. It's a single-bevel knife — sharpened on one side only — with a long, thin blade typically ranging from 240mm to 330mm.

The blade is designed for one primary purpose: slicing raw fish and seafood with long, smooth, single-stroke cuts. Everything about its design serves that purpose — the length, the thinness, the single-bevel geometry, the flat back face.

It's one of the most iconic knives in Japanese cuisine and one of the most important tools in any sushi kitchen.

What Makes It Different — The Single-Bevel Edge

The single-bevel design is what separates the Yanagiba from every other fish knife. Unlike a Gyuto which is sharpened on both sides, the Yanagiba is sharpened on the front face only. The back face is completely flat.

That flat back does something specific: as the blade passes through fish, it pushes the cut slice away cleanly. The fish separates from the blade rather than sticking to it. The result is a cut surface that is smooth, slightly glossy, and completely undamaged.

Compare this to cutting fish with a double-bevel knife — even a sharp one. The V-shaped edge compresses the fish slightly as it cuts. The surface is less clean, less smooth. You can see the difference on the plate and you can feel it in texture when you eat.

For sashimi and nigiri where the quality of each slice is everything, this distinction is not minor. It's the difference between good and exceptional.

How I Use It Every Service

At the start of every shift I prep fish — salmon, tuna shabu, hamachi, sea bass. The Yanagiba handles all of it. Here's what those cuts actually feel like:

Smooth, long cuts in one stroke. That's the defining characteristic. A sharp Yanagiba moves through fish muscle in a single pulling motion — no sawing, no repositioning, no second stroke. You place the heel of the blade at the start of the cut, pull smoothly to the tip, and the slice falls away cleanly.

No flesh damage. No uneven cuts. No torn muscle fibres. Just clean, precise slices that look and taste exactly as they should.

When the knife is properly sharp you barely feel resistance. The blade seems to separate the fish rather than cut through it. That feeling — or the absence of resistance — is how you know the Yanagiba is working as it should.

What the Yanagiba Is Used For

• Sashimi slicing — the primary purpose. Clean single-stroke cuts through salmon, tuna, yellowtail, sea bass, any raw fish
• Nigiri fish prep — slicing fish to the exact thickness and size for nigiri
• Skinning fish fillets — the long blade and flat back make it excellent for running between skin and flesh
• Decorative cuts — the precision of the single-bevel edge allows elaborate presentation cuts that other knives can't replicate cleanly

What it is not for: vegetables, bones, general prep. The Yanagiba is a specialist — use it for fish work and nothing else. For everything else, reach for your Gyuto.

Who Needs a Yanagiba

Anyone who works seriously with fish. That's the honest answer.

Professional sushi chefs and Japanese kitchen chefs — essential. If you're prepping fish every service, a Yanagiba is not optional. It's the correct tool for the job and trying to do sashimi work without one is making your work harder and your fish worse.

Home cooks who cook fish regularly — very worthwhile. If you buy whole fish, make sashimi at home, or want to take your fish prep to a higher level, a Yanagiba will transform how you work with fish. The difference is immediately obvious from the first use.

Casual home cooks — not yet. If you only cook fish occasionally, your existing knife is fine. The Yanagiba rewards regular use and practice. When you're working with fish consistently enough to justify it — you'll know.

Yanagiba vs Gyuto for Fish Work

This is a question I had early in my career. I bought a Yanagiba as my first knife — before I had a Gyuto — which was the wrong order. But it did teach me something: the two knives are completely different tools.

A sharp Gyuto can slice fish reasonably well. For occasional fish work at home, it's adequate. But it will never produce the same result as a Yanagiba for sashimi. The single-bevel geometry creates a cut quality that a double-bevel knife simply cannot replicate.

In a professional kitchen doing sashimi every service — there is no substitute for the Yanagiba. Use the Gyuto for everything else, and reach for the Yanagiba the moment fish work begins.

Sharpening a Yanagiba

The Yanagiba requires specific sharpening technique because of its single-bevel geometry. You sharpen primarily on the flat back face to remove the burr, and work the bevel face at the original angle to restore the edge. This is different from sharpening a double-bevel knife.

Get this wrong and you damage the flat back — which ruins the single-bevel geometry and defeats the purpose of the knife. If you're new to sharpening Japanese knives, read our guide on how to sharpen on a whetstone first and understand double-bevel sharpening before tackling single-bevel.

What Size Yanagiba to Buy

• 240mm — good starting size for home cooks and beginners. Manageable length, easier to control while learning the pull cut technique.
• 270mm — the most common professional size. Long enough for most fish work, versatile across different fish sizes.
• 300mm+ — for experienced chefs working with large fish regularly. Requires confidence and proper technique to use well.

For most people starting with a Yanagiba — 270mm is the right choice. Long enough to do the job properly, short enough to learn with.

Quick Reference

The knife that makes sashimi what it is. Once you use a properly sharp Yanagiba for fish work — you'll understand why it's irreplaceable. 🔪