KANZEN Knife — Two-Size Set (Standard & Petty)
Tax included.
KANZEN Knife: The Long-Awaited Standard & Petty Set
The standard size and petty size KANZEN Knives, together in one great-value set.
The standard size is ideal for meat, fish, and larger vegetables.
The petty size suits smaller vegetables and quick tasks — switching between the two makes everyday cooking even more comfortable.
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Set Contents
[KANZEN Knife]
•Overall length: 340mm
•Blade length: 203mm
•Width: 50mm
•Weight: 163g
•Read the reviews
[KANZEN Petty Knife]
•Overall length: 230mm
•Blade length: 120mm
•Width: 34mm
•Weight: 64g
•Read the reviews
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About Shipping Timing
Due to orders far exceeding our expectations, the KANZEN Knife currently requires several months for completion and shipment.
* Please check the estimated shipping month indicated in the product name.
Ships Direct from Japan
7-day free trial
Choose options
Tax included.
An even better deal: the 2-size set
Tax included.
With the set discount, you save 10% off the regular combined price.
Reducing the amount of work to 1/10 will completely change your daily cooking.
1. Cleaves an avocado in two
Scientifically proven: 3 times the sharpness
Comparison testing of the KANZEN Knife against mid-priced knives showed roughly 3 times the sharpness — and it proved sharper even than knives in its own price range.
In addition, after about six months of cooking use, the knife was found to retain sharpness equivalent to a brand-new mid-priced knife.
Its high level of sharpness is proven to last.
*DCC method: a test that strokes a knife across test paper under fixed conditions and measures the cutting distance per stroke. A larger value indicates a sharper edge.
2. Proven by a research institute
A knife that makes food taste better
Using the taste sensor “Leo,” developed by Keio University and OISSY Inc., we scientifically analyzed how knives change the taste of food — and the results were astonishing.
A change in taste that over 95% of people notice
When a tomato was cut using two knives, a KANZEN Knife and a mid-priced stainless steel knife, and the changes in taste were analyzed, it was proven that the KANZEN Knife produced a significant difference in taste, with 95% of people noticing the umami and over 75% noticing the sweetness and richness.
Why does food taste better?
The reason lies in the shape of the blade. The KANZEN Knife's edge is polished sharp and smooth to approximately 0.001 mm.
Most knives are machine-polished, but the KANZEN Knife is carefully polished one by one by bladesmiths of Seki City, Gifu Prefecture — heirs to 800 years of blade-making.
As a result, it cuts cleanly without damaging the fibers of the food, transforming how the food tastes.
3. For safe, confident use at home
Care is just wash and wipe
Sharp, expensive carbon-steel knives require special care, but the KANZEN Knife is made of premium, highly rust-resistant stainless steel — so just like an ordinary household knife, simply washing and promptly wiping it dry prevents rust and preserves the edge.
How is it possible to achieve both high sharpness and easy maintenance?
The KANZEN Knife achieves its high performance through “honyaki-style” construction, using the super stainless steel “VG-10” for 100% of the blade.
In ordinary knives, VG-10 super stainless steel typically makes up only about 10–20% of the blade as the core material, sandwiched between softer stainless steel on both sides.
The KANZEN Knife instead applies honyaki-style construction with super stainless steel throughout — making it possible to use the highest-quality stainless steel for 100% of the blade. This is how the KANZEN Knife was realized.
Made in
Seki, Gifu, Japan
The KANZEN Knife was created by the blade artisans of Seki, Gifu — a town with 800 years of cutlery heritage.
Born of rare skill, it is a pinnacle of Japanese knife-making the country can be proud of.
MADE IN JAPAN
Tashinam’s craftsmanship, hand in hand with Japan’s artisans
Our mission is to enrich lives around the world through traditional Japanese craftsmanship. We hope you enjoy our unparalleled masterpieces, developed in collaboration with blade artisans in Seki City, Gifu Prefecture.
For customers who want to try the product in person
Our Store in Tokyo
Our permanent store lets you try Tashinam's kitchen tools, including the KANZEN Knife, with real ingredients. Come hold them in your hand and compare the differences in weight and blade length before you choose.
Address: Kosugi Building 1F-C, 2-11-16 Jiyugaoka, Meguro-ku, Tokyo
1 minute on foot from Jiyugaoka Station (Tokyu Toyoko Line / Oimachi Line)
Hours: 12:00–18:00 / Closed Wednesdays
For gift
Also makes a wonderful gift
Perfect knives are a very popular product that is purchased as a gift.
It will be shipped in a stylish white gift box, so why not buy one for yourself and one as a gift for someone special?
A set of two is even better value
Save 10% when bought as a set.
If you would like items shipped to separate addresses, please contact us via the inquiry form.
FAQ
Frequently asked questions
Instead of physical stores, we offer a 7-day trial period so you can try the KANZEN Knife at home.
The blade is 100% VG-10, a super stainless steel also called ultra-hard alloy steel.
This steel is normally used only in parts such as the edge, but by independently developing a manufacturing process specialized for super stainless, the KANZEN Knife uses it for 100% of the blade.
The handle uses black laminated wood, prized for durability and stability.
Yes, you can use it without any problem. The KANZEN Knife has a double-bevel edge, so it delivers the same sharpness regardless of which hand you use.
The standard size is 340mm overall, with a 203mm blade, weighing 163g — sized to cut virtually any ingredient with ease, and slightly lighter than a typical knife.
Like-new sharpness varies with frequency of use and ingredients, but with typical home use (once or twice a day), expect about 1–2 months.
Sharpness ample for everyday cooking should last about a year or more.
No, it cannot be used.
The high heat and water jets can cause the handle to whiten and the blade to deteriorate.
* Problems caused by dishwasher use are not covered by the warranty or eligible for return.
Yes, off-the-shelf whetstones work fine.
That said, the KANZEN Whetstone is a dedicated stone carefully designed for the steel and hardness of the KANZEN Knife. Store-bought stones will sharpen it adequately, but the KANZEN Whetstone offers smoother sharpening and helps the edge last longer. For those planning a long life together with their knife, it’s well worth trying.
Depending on what you cut, the blade may chip — this is part of the product's specifications.
Frozen foods, hard seeds and pits, and bones are the main causes of chipping.
Chips caused by these foods are repaired for a fee.
Rust can occur by the nature of stainless steel and is not an initial defect.
Washing off grime after use and always wiping the blade dry before storing makes rust far less likely.
After use, wash well, wipe off moisture thoroughly with a towel, and let it dry.
Leaving it unattended for more than 3 hours after use can cause rust.
If rust does appear, use a coarse sponge or a dedicated rust-removal sponge.
We offer a trial period so you can experience the KANZEN Knife risk-free. If it does not meet your expectations, contact us within 4–7 days of delivery via our inquiry form and we will arrange a return and refund. Return shipping is covered by Tashinam. Please see our Refund Policy for full details and exceptions.
The following payment methods are available.
1. Credit card (VISA, Mastercard, AMEX, JCB)
2. Apple Pay, Google Pay, Shop Pay
If your card cannot be used, please check its expiration date and available credit limit, then contact your card issuer.
We ship directly from Japan. Shipping is calculated at checkout based on your order.
Due to orders far exceeding our expectations, the KANZEN Knife currently requires several months for completion and shipment.
Please check the estimated shipping month indicated in the product name.
* The shipping month indicated in the product name is an estimate. Depending on manufacturing conditions, shipment may be delayed — thank you for your understanding.
When your order ships, a shipping notification with a tracking number will be sent to your email address, so you can check the delivery status there.
About the 7-day free trial
Within the 7-day trial period, please follow the return procedure below.
Step 1: Contact us via our inquiry form and select "Return within 7 days (free trial)."
* Please note that returns for reasons inconsistent with the purpose of the trial — such as intentional damage, or rust, scratches, and other deterioration caused by improper use — cannot be accepted.
Step 2: Once we confirm that your return is eligible, we will send you the return instructions.
Step 3: After we receive and inspect the returned product, we will refund your purchase price to your original payment method.
* Return shipping is covered by Tashinam, so please rest assured.
About order cancellations
Tashinam does not accept any cancellations after a pre-order or order has been placed.
For pre-order products, manufacturing begins once your order is confirmed.
Our entire team prepares each order with the greatest care so that we can deliver a product you will be satisfied with, and we appreciate your kind understanding.
If the product is defective, please contact us via our inquiry form within 7 days of the product's arrival.