KANZEN Knife (Set of 2)
Tax included.
The aim was to create a flawless knife
This is a great value set of two bottles, one for yourself and the other as a gift for someone.
Despite being three times sharper, We have created a dream knife that does not require any special care.
If you would like to have separate shipping addresses, please contact us.
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.
Free Shipping
7-day free trial
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An even better deal: the 2-size set
Tax included.
With the set discount, you save 10% — ¥6,270 off the regular combined price of ¥62,700.
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.
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 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
10% OFF as a set — ¥6,600 off the regular price of ¥66,000
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.
The 7-day free trial is a program that guarantees a full refund and return if the KANZEN Knife does not meet your expectations, provided you request the return no earlier than 4 days and no later than 7 days after the delivery date.
(To ensure you have enough time to properly try the product, a minimum 3-day trial from the delivery date is required.)
■ About the trial period: if your product is delivered on January 1, the final day of the free trial is January 7, the 7th day from delivery. From the 8th day after delivery onward, the free trial no longer applies. Please take note.
■ From purchase to trial period
Step 1
Choose your product on the official Tashinam online store, enter your customer information, and place your order. We will deliver it to your home with free shipping.
Step 2
The 7-day trial period starts on the day the product arrives. Enjoy the blissful cutting experience of the KANZEN Knife to the fullest.
Step 3
If for any reason you are not satisfied, we will accept a return and issue a refund. Please contact us via the return request form and follow the instructions.
■ Examples where the 7-day trial does not apply
- Intentional damage to the product
- Rust caused by improper use
- Deterioration such as scratches, or orders placed by mistake
- Other reasons inconsistent with the purpose of the trial: please note that returns for reasons inconsistent with the purpose of the trial cannot be accepted.
To request a return, please select “Return during the free trial period” in the inquiry form below and submit your application.
Request a free trial return here
Please also note that completing a customer survey is required as part of the free trial application.
We appreciate your understanding and cooperation in helping us improve our products and service.
■ Return procedure
Contact us via the return request form: 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.
You can submit your return request above.
Delivery of the return kit: after reviewing your application and confirming that your return is eligible for the trial, we will send a return kit to your designated address.
Pack the product you wish to return and ship it to the designated address.
Return and refund: after the product is returned to the designated address, we will refund your purchase price.
Return shipping is free of charge (covered by Tashinam), so please rest assured.
The following payment methods are available.
1. Credit card (JCB, VISA, Mastercard, AMEX)
2. PayPal, PayPay, LINE Pay, Merpay
3. 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.
* Installment and bonus payments are not available for credit card or Apple Pay payments.
* Payment by bank transfer is not supported.
Shipping is free nationwide.
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 the return request form.
* 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: Our customer support will send you a survey regarding the return.
Step 3: Please complete the survey. Your feedback is extremely valuable in helping us improve our products and service — we would love to hear your thoughts.
Step 4: After the product is returned to the designated address, we will refund your purchase price.
* Return shipping is free of charge (covered by Tashinam), so please rest assured.
* We will send you a return kit, so please pack the product and send it back.
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 the inquiry form within 7 days of the product's arrival.