These type of knives are usually ground for right handed cooks (single vs double bevel). Any lefties using these?

I am left handed. The single bevel grind you are referring to is what's called a "chisel-grind", and as such are designed with either right-hand specific, or left-hand specific users in mind. Only the Deba, Usuba, and Yanagiba knives from the Wasabi line are chisel-ground (right handed orientation). All of the other knives from Wasabi are made with a standard 50/50 grind and will be suitable for left-handed users like myself. Hope this helps.

is this a forged knife ?

Japanese knives by the larger companies are by and large stamped. However, the quality of the steel they use, fit and finish, and meticulous attention to detail make this distinction pretty much moot when it comes to the quality of their knives. Anybody who has used a Japanese knife by any of the well-known brands can tell you their knives are incredible, regardless of whether they were forged or not.

Anyone else had problems with rust? I hand-washed and left this knife on a drying pad for a week, now it's got rust spots all over.

First you are not respecting your tools. Knives, all knives need and deserve care. Hand wash, then hand dry. Store in a sheath or in a drawer away from moisture. Wipe with a thin coat of olive oil if you wish. I own the 8" Deba with the bamboo colored handle for over 10 years, it is still sharp and never spotted or rusted. It is made with ultra high carbon Molybdenum steel. So it can get spots, but I take care of my things so I never had an issue. Btw, I'm a 21 year veteran chef.

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Wasabi Black Yanagiba 21.0 cm blade length - polished 6A/1K6 stainless steel 58 (±1) HRC - black polypropylene handle - sushi knife, sashimi knife - Made in Japan

Wasabi Black Yanagiba 21.0 cm blade length - polished 6A/1K6 stainless steel 58 (±1) HRC - black polypropylene handle - sushi knife, sashimi knife - Made in Japan

Product ID: 65587373

Details

Blade edge
Plain
Blade material
High Carbon
Brand
KAI
Colour
Black (Handle)
Handle material
Stainless

🔪21 cm razor-sharp blade

🖤Ergonomic black polypropylene handle

⚙️58±1 HRC Rockwell hardness

€ 146.22

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Description

🗡️ Slice like a sushi master — own the edge that chefs swear by!

ERGONOMIC NATURAL GRIP - Black polypropylene handle infused with bamboo powder offers comfort and superior control during extended use.
SAMURAI GRADE SHARPNESS - 58±1 HRC polished 6A/1K6 stainless steel ensures enduring edge retention and effortless slicing.
HYGIENIC SEAMLESS DESIGN - Handle fully encases the blade tang, preventing dirt buildup and simplifying cleaning for a pristine kitchen tool.
HERITAGE MEETS INNOVATION - Over 115 years of Japanese craftsmanship fused with modern materials for a knife that’s both timeless and cutting-edge.
PRECISION SLICING MASTERY - 21 cm single-edged Yanagiba blade crafted for flawless sushi and sashimi cuts.

The KAI Wasabi Black Yanagiba is a premium Japanese sushi knife featuring a 21 cm polished 6A/1K6 stainless steel blade with a Rockwell hardness of 58±1 HRC. Designed for precision slicing of fish, its single-edged blade and ergonomic black polypropylene handle infused with bamboo powder deliver unmatched sharpness, control, and durability. Crafted in Japan with over a century of expertise, this knife combines traditional samurai forging techniques with modern innovation, making it an essential tool for professional and aspiring chefs alike.

Specifications

ASIN	B0016GZA3O
Best Sellers Rank	191,629 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 2 in Sashimi Knives 3,537 in Cutlery (Home & Kitchen)
Blade Colour	Silver
Blade Edge	Plain
Blade Material Type	High Carbon Stainless Steel
Blade edge	Plain
Blade length	9 Inches
Blade material	High Carbon Stainless Steel
BladeLength	9 Inches
Brand	KAI
Brand Name	KAI
Colour	Black (Handle) / Stainless Steel Blade
Construction Type	Stamped
Country Of Origin	Japan
Customer Reviews	4.5 out of 5 stars 761 Reviews
Global Trade Identification Number	04901601464559
Handle Material	Stainless,Stainless Steel,Polypropylene,High-carbon
Handle material	Stainless,Stainless Steel,Polypropylene,High-carbon
Included Components	Knife
Is the item dishwasher safe?	Yes
Item Length	13.25 Inches
Item Type Name	Kai Wasabi Black Yanagiba Knife, 8.25 Inch, 6721Y
Item Weight	201.6 Grams
Manufacturer	Kai
Manufacturer Part Number	6721.Y
Material Type	Stainless Steel
Model Number	6721Y
Size	23 cm
UPC	885270362757 786173345826 097914386733 789542522194
Unit Count	1.0 count

Reviews

S**A

Extremely sharp

Very good quality

9.08.2025

P**M

Sharpest knife I have ever owned.

I was a chef for more than twenty years and also owned a company that sharpened other chefs knives. In all that time this remains the sharpest knife I have ever bought. I actually shaved the back of my hand straight out of the packaging. The weight is good and handling exceptional for this style of knife. All that remains is to see how the steel holds up. Time will tell.

1.08.2020

R**A

KAI Wasabi Yanagiba Sushi/Sashimi knife

The KAI Wasabi Yanagiba is an excellent knife for slicing pretty much anything from salmon to watermelon. Just make sure you buy a suitable guard for it as it is extremely sharp. In fact, the blade is so finely honed that you may not even feel it if you cut yourself! Be very careful indeed with this knife - it is not for amateurs. You won't find a better slicer/carver than this unless you are willing to pay two, three, or even four hundred pounds.

23.04.2025

J**N

Very good quality knife and extremely Sharp

Came out of the box extremely Sharp. Perfect for cutting sushi rolls. Glides through tempura shrimp like butter. Great quality!

29.03.2021

G**X

Impec!

18.03.2026

A**T

Buen cuchillo

Vale la pena.

9.12.2023

S**G

So la la

Nicht besonders, schnell stumpf

6.03.2026

S**E

Bien

Couteau d’une excellente qualité. Lame très tranchante, coupe nette et précise pour le poisson. Parfait pour le sashimi et le sushi. Très bon rapport qualité-prix. Je recommande vivement.

7.12.2025

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