Japanese Chef Knife Tosa Tadayoshi x Sakai Yasuo Yauchi Blue1 Black Kujira 330mm

In stock

Kitchen Knife Chef Knife


$664.00 USD
$664.00 USD


Japanese Chef Knife Tosa Tadayoshi x Sakai Yasuo Yauchi Blue1 Black Kujira 330mm

"Tosa Uchihamono" is a traditional craft with a history of more than 400 years, in which craftsmen use a press or hammer to consistently perform from forging to grinding/sharpening and finishing without using a mold.

Among the Tosa knives produced by such traditional craftsmanship, the "Kujira knife" introduces this time is a knife that has long been used by fishermen, fish shops, and restaurants in Tosa (Kochi Prefecture), the home of  Kujira fishing.

This Kujira knives uses "Yasuki Aogami No. 1", which is one of the highest hardness among steels. It has excellent wear resistance, is hard to chip, and has a long-lasting sharpness.

In order to pursue the sharpness of this Tosa-uchi Kujira knife, we made a special request to have this knife sharpened at Yauchi Hamono Mfg. in Sakai!

Blacksmith: Tadayoshi Tokaji / Tadayoshi Forging Co., Ltd.

Learned the technique of "free forging" and mainly produces sickles, knives. The skill is highly evaluated nationwide and contributes to the spread of Tosa knives.

Mr Tadayoshi Tokaji can make non-standard dimensions and shapes according to customer's needs. Additionally, Tokaji Forging is run by Tadayoshi Tokaji and his son Tsukasa. Both of them certified as a "Takumi of Tosa ( Artisan of Tosa )", Tsukasa is active as a lecturer of technical transfer at the "Blacksmith Creation School" of  'Kochi pref. Tosa Knife Cooperative'.

Sharpener : Yasuo Yauchi / Yauchi Hamono Mfg. Sakai

YASUO YAUCHI, the second generation of sharpeners, has been keeping in mind "warmth to the hand and friendliness to the use", which is the spirit of the craftsman.

The company has maintained the tradition inherited from its predecessors and is committed to making handmade kitchen knives one by one for 50 years,

Yauchi san specializes in the production of "double-edged knives," which are now few in Sakai, the town of cutlery.

Japanese Chef Knife Tosa Tadayoshi x Sakai Yasuo Yauchi Blue1 Black Kujira 330mm

[ Specification ]

Country of origin Hendmade in Japan / Tosa ( Kochi pref.) / Sakai ( Osaka )
Material Blue 1 Carbon Steel Soft Iron Cladding / Magnolia Octagonal + Water Buffalo Ferrule handle
Other specification standard Tosa Tadayoshi emblem,
Blue 1 Carbon Steel engraved,

Size / Weight *330mm :Overall Length: 658mm
Blade Length:330mm (Tip to heel 343mm )
Blade Width: 67mm ( Heel to spine)
Blade Thickness: 4.5mm( Handle ) to 0.2mm (Cutting edge)
Handle Length: 300mm
Weight : 625g

Gift box Ask
Option N/A

Accept credit or debit card and bank payments safely and easily with PayPal.

  • We accept PayPal (American Express, Discover, eCheck, MasterCard, Visa and PayPal transfers)
  • Please complete payment within 2 days of auction end.
  • We will ship the item 5 business days after your payment clears.

We ship it in Japan Post EMS/DHL/FedEx .

  • We attach the tracking number. 
  • Shipping is only available to the address registered 
  • Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.
  • We don't mark merchandise values below value or mark items as "gifts" as profibited by US and other government regulations.-US and International government regulations.
  • If you want to ship another address, please feel free to ask us.

If the item you received has some problems, please contact us with your reason within 3 days from the day you received it. We will respond with instructions for returns and accept returns for money back. If the item is returned prior to our response, all taxes and shipping fees will unconditionally be borne by the buyer.

  • We are open:Monday - Saturday 6:00 PM through 3:00AM PST
  • Due to time differences, please allow us some time to respond to messages.

ABOUT "Ikyu"

Ikyu sells valuable Japanese traditional products, mainly Osaka-Sakai kitchen knives (Wa Bocho) to customers over the world.
Soul entered knives by skilled Japanese craftsmen commits "pleasure of ownership" to the customer who bought.


Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Recently Viewed Products