Single Bevel vs Double Bevel Knives Explained

Every knife question eventually arrives here. Japanese knives come in two fundamentally different constructions: double bevel, where the edge is ground on both sides, and single bevel, where it is ground on one. Which one you need depends entirely on what you cook, and for most people the answer is simpler than the internet makes it look.

Double bevel: the everyday choice

A double bevel edge is sharpened on both faces, like a Western knife but usually thinner and at a lower angle. It cuts straight, works in either hand, and handles every general kitchen task. Gyuto, santoku, bunka, nakiri, petty and sujihiki are all double bevel. If you are choosing an everyday knife, this is the answer, and the rest of this article is just detail.

Single bevel: the specialist tradition

A single bevel knife is ground on one side only. The back is nearly flat, with a subtle hollow (urasuki) and a fine flat rim (uraoshi). This geometry comes from traditional Japanese fish and vegetable work, and it does things a double bevel cannot:

• The flat back releases slices cleanly and steers dead straight along fish bones.
• The single-sided edge takes an extraordinarily acute angle, which is why sashimi cut with a yanagiba has that glassy surface.
• The asymmetry gives precise control for tasks like katsuramuki, the paper-thin rotary peel done with an usuba.

The classic single bevels are the yanagiba (sashimi), deba (fish butchery) and usuba (professional vegetable work, in our nakiri and usuba collection), plus smaller traditional knives like the kaisaki and mukimono.

The honest trade-offs

• Handedness. Single bevels are side-specific. Standard knives are ground for right-handed use, and left-handed versions are made to order and cost more. Double bevels do not care which hand you use.
• Learning curve. A single bevel steers into the cut if you let it. Fish work rewards this; dicing an onion does not. They are specialist tools, not upgrades.
• Sharpening. Double bevels are where everyone should learn (our sharpening guide covers it). Single bevel sharpening is a different discipline, and getting the ura wrong can genuinely damage the knife. Bring your first one to our sharpening service, or learn it properly in a class.
• Steel and tradition. Most single bevels are carbon steel (usually White steel) with soft iron cladding, so they need the care habits from our knife care guide.

So which do you need?

• Everyday cooking, first Japanese knife, general prep: double bevel. A gyuto or santoku.
• You break down whole fish or make sushi and sashimi regularly: add a single bevel. Deba for butchery, yanagiba for slicing.
• You are chasing traditional Japanese technique: welcome to the deep end. Come talk to us first, we love this stuff.

Want to feel the difference in hand? Both types are on the bench at the studio, Lot 10, 198 Adelaide Street, Brisbane City. Or email contact@japaneseknifestudio.com.au.