Nakiri vs Usuba

Buy the nakiri. A usuba is the better vegetable knife in the hands of someone who sharpens single bevels daily, and a worse one in every other pair of hands, including yours for at least the first year. The Tojiro DP F-502 gives you 95 percent of the cutting performance and asks nothing unusual of you.

Both knives exist to do the same thing: cut vegetables with a tall, flat, very thin blade. They look similar on a shelf. The difference is invisible until you turn one over, and it changes everything about owning it.

The usuba's hollow back, the urasuki, is the part people underestimate. It is a slight concavity ground into the flat side, and it has to be maintained — touched up on a stone in its own right. Sharpen a usuba carelessly a dozen times and you flatten the urasuki, at which point the knife needs professional thinning to be worth using again.

• Katsuramuki. The rotating peel that turns a daikon into one continuous sheet two meters long. This is the job the shape exists for, and a double bevel genuinely cannot do it as well because the blade wants to steer out of the cut.
• The cleanest possible face on a dense vegetable. A single bevel can be thinner behind the edge for the same spine thickness, so there is less wedging and the cut surface is less bruised. On a carrot this is invisible. On a sheet of daikon destined for a garnish it is the point.
• Straight-line precision. With the flat side against the food you get a reference surface, which is why professional vegetable work in Japanese kitchens is done this way.

• A sharpening skill, not a sharpening session. A single bevel is sharpened bevel-first, then the back is deburred flat, and the stone has to be genuinely flat for the back work to be possible. Our sharpening walkthrough covers double bevels; a usuba is a step beyond it.
• Steering. A single bevel pushes the cut toward the flat side. Experienced users correct without thinking. New users produce wedges instead of slices and conclude the knife is faulty.
• Handedness. A right-hand usuba is awkward to useless in a left hand, and left-hand grinds carry a premium. Double-bevel nakiris are ambidextrous, which is why we recommend them in our left-handed guide.
• Usually carbon steel. Many usubas are unclad carbon, so they rust if left wet for ten minutes. That is manageable, but it is one more thing to learn at the same time.

Nakiri, for almost everyone reading this. Tojiro DP F-502 if you want the cheapest one worth owning, Shun Classic DM0728 if you want the upgrade and a pakkawood handle that works in either hand. Spend the difference on a decent 1000 and 6000 grit stone, because the thing that separates a good vegetable knife from a bad one in daily use is not bevel count — it is whether the edge was touched up this month. If you are still choosing between large shapes, gyuto versus nakiri is the more practical decision.