Slicing sushi and sashimi well is as much about the knife as the technique. A dedicated slicing knife lets you cut fish in one clean, drawing motion — preserving its delicate texture rather than tearing it. Here is what matters when choosing one.
Why Single-Bevel Design Matters
The classic sushi slicer, the yanagiba, is a long, slim, single-bevel knife — sharpened on one face only, with the other left flat. That geometry produces an incredibly acute edge and lets the blade glide through fish with minimal resistance, giving mirror-smooth cut surfaces. Because a single-bevel edge is ground for one hand, these knives are made in specific right-handed and left-handed versions; buying the wrong hand will fight you.
Blade Length and Steel
Length lets you slice in a single pull rather than sawing, which bruises fish. Slicers typically run 24–30 cm; longer blades suit larger fillets, while a shorter one is easier to control at home. Traditional yanagiba are often high-carbon steel for maximum sharpness — wonderful to use but reactive, so they must be wiped and dried promptly. Stainless and stainless-clad versions trade a sliver of keenness for much easier upkeep.
Other Traditional Sushi & Fish Knives
The yanagiba is the most familiar, but a traditional Japanese kitchen uses a small family of single-bevel fish knives, each with a job:
- Yanagiba — the long, slim slicer for sashimi and nigiri; the one most home cooks want.
- Deba — a thick, heavy knife for breaking down whole fish and cutting through small bones.
- Usuba — a straight-edged single-bevel vegetable knife used for precise, decorative cuts.
For home use, a yanagiba (or a double-bevel slicer) covers almost everything; the deba and usuba are specialist tools you can add later if you start breaking down whole fish yourself.
A Note on Slicing Technique
A great knife only shines with the right motion. Slice sashimi in a single, smooth pull from heel to tip — let the length of the blade do the work rather than sawing back and forth, which tears the delicate flesh. Keep the fish cold and the edge keen, and aim for clean, even slices with a glossy cut surface.
Beginner-Friendly Alternatives
A true single-bevel yanagiba has a learning curve and needs careful whetstone sharpening. If you are just starting out, a double-bevel sujihiki (a Western-style slicer) or even a sharp gyuto will slice fish beautifully and is far more forgiving. You can always add a traditional single-bevel knife later.
Caring for a Single-Bevel Edge
Single-bevel blades demand respect. Cut only on wood or soft boards, never twist or pry, and keep the knife away from bones. Dry immediately — essential for carbon steel — and store it protected. Sharpen on whetstones, maintaining the flat back and the shallow bevel angle. For the underlying principles of steel and edge maintenance, see our kitchen knives guide. And whenever you work with raw fish, follow safe-handling practice from our food safety guide.