Katsuramuki master

Sakai Kikumori Usuba 210mm

VG10 · Migaki · 280 g

12.313,00 Kč
incl. VAT · Free EU shipping over €80
1

Only 1 left · Ships from Prague

  • Free EU shipping over €80
  • 30-day returns, no questions
The numbers that matter

The card carries everything.

Every blade on this site gets its own trading card - tier-colored, kamon-stamped, and built around the seven specs that actually predict how the knife behaves on the line. Steel. Hardness. Edge. Length. Handle. Finish. Origin.

UNIQUE

SAKAI KIKUMORI USUBA 210MM

Sakai Kikumori Usuba 210mm
USUBA·KATSURAMUKI MASTER
Steel
VG10
Hardness
60-61
Edge
Single Bevel
Handle
Magnolia Wood
Grip
Octagonal
Finish
Migaki
Origin
Japan
Weight
280 g
Length
210 mm
Tier
Unique

“The vegetable yanagiba — paper-thin slices that read like glass.”

SAKAI KIKUMORI USUBA 210MM

“The vegetable yanagiba — paper-thin slices that read like glass.”

Anatomy

Why this shape.

Blade length 210 mm
Usuba薄刃

The vegetable knife. Tall, flat, single-bevelled - the blade that makes katsuramuki possible (a daikon peeled into a single continuous sheet of vegetable).

Flat edge demands board contact, not rocking. A traditional Japanese kitchen tool that rewards practice - and ruthlessly punishes a tired wrist.

The usuba and the art of vegetable knife work
Material Magnolia Wood
Octagonal八角

Eight flat sides give the blade vertical alignment in your grip. The dominant Japanese kitchen handle - the one professional chefs reach for first.

Ambidextrous. Comfortable in any grip style - pinch, hammer, or finger-tip. The geometry tells your hand where the edge is pointing without looking down.

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Who it's for

The honest answer.

Where this blade earns its keep - and where it's the wrong tool.

Vegetables, only vegetables

  • +Katsuramuki (continuous daikon sheet)
  • +Vegetable carving + decoration
  • +Paper-thin slicing
  • Protein, fish, bone - wrong knife, wrong geometry

Sushi-trained or serious dedicated user

  • +Single-bevel sharpening practice
  • +Vegetable-focused menu
  • +Eastern (Kanto) traditional kitchen
  • General home use - overkill + unforgiving, look at a nakiri instead

Push-cut, board-contact

  • +Flat edge stays on the board
  • +Tall blade gives knuckle clearance
  • +Slow, deliberate cuts
  • Rocking + chopping - wrong tool, the geometry fights back
Care & sharpening

Four habits and it lasts a lifetime.

  1. 01

    Wash by hand

    Warm water + a soft sponge. No dishwasher, ever - the heat warps the handle and the detergent eats the edge.

  2. 02

    Dry immediately

    Wipe to bone-dry the moment it leaves the sink. Standing water is the enemy - even on stainless.

  3. 03

    Oil if storing long-term

    Stainless doesn't need daily oiling. If you're putting it away for more than a month, a thin pass of camellia oil keeps the steel happy.

    Daily use: dry and rack. No oil required.

  4. 04

    Sharpen on a stone

    A 1000-grit waterstone every few weeks. Stropping between for a longer life on the edge.

Goes with

Made for this knife.

A saya for storage. A stone for the edge. An oil for the steel.

Camelia Blade Oil
Care oil

Camelia Blade Oil

Camellia (tsubaki) oil. Food-safe. A thin pass keeps the steel quiet.

369,00 Kč
A note from us

Why we picked it.

Ethan, SSC founder
Ethan
Founder · Smart Sushi Chef

“Sakai Kikumori Usuba 210mm is the traditional vegetable specialist - tall, flat, single-bevelled. VG-10 holds the edge like carbon but forgives the morning sink, running at HRC 60-61. In the kitchen, that means it makes katsuramuki possible and rewards practice the way few Western tools do. It sits in our catalog because it earns its keep on a working line, the geometry is honest, and the steel is what the maker said it is. We've held it. That's what gets a knife on this site. ”

- Ethan

Questions we get

Before you buy.

Is this knife stainless?

Yes - the chromium content in the steel passes a thin oxide layer over the surface that resists rust under normal kitchen use. You still hand-wash and dry it like any good knife (no dishwasher, no soaking), but you don't need the daily oil-wipe routine a carbon blade needs.

Can I put it in the dishwasher?

No knife you care about should go in a dishwasher. The heat warps the handle, the detergent dulls the edge, and clattering against other dishes chips the bevel. Hand-wash with warm water and a soft sponge, then dry immediately.

What does HRC 60-61 mean?

HRC stands for "Rockwell Hardness, scale C" - a measurement of how hard the steel is. Higher numbers mean the steel holds an edge longer but is also more brittle. This knife is 60-61 HRC, which is the working sweet spot for Japanese kitchen blades.

How do I sharpen a single-bevel knife?

Different routine from a double-bevel. The front bevel (omote) is the only side you grind: lay it flat against a 1000-grit waterstone at the angle the maker ground it (around 10-15 degrees, follow the existing bevel line), full-length strokes, light pressure, until you raise a burr along the full edge. The back of the blade (ura) is concave - the "urasuki" hollow - and must stay flat. Lay the back of the blade flat against a fine finishing stone (5000-grit minimum) and pull it across, no angle, just enough to remove the burr. If you grind angle into the ura you destroy the geometry that makes the blade cut. Never use a pull-through sharpener on a single-bevel.

Where do you ship?

We ship from our EU warehouse in Prague. Free across the EU on orders over €80, ~3-5 business days. Outside EU: standard rates apply, customs handled at destination. Tracking on every order.

What if it doesn't feel right?

30 days, no questions asked. Ship it back, we refund. Damage from misuse (hitting bone, frozen food, dropping) isn't covered - but normal 'this isn't right for me' is. Email office@smartsushichef.com to start.