A Thing of Beauty
"Added this to my Masashi collection to complete it. Zero regrets. Lightweight, another stunner in my kitchen."
£10 Shipping on orders over £150 to the UK.
Collar/Ferule colour may vary from light brown to almost black. You can see examples of the variation here.
About Masashi Kokuen - This blade's core is made from hard SLD steel clad in softer stainless steel, which Masashi-san can push to the absolute limit of hardness through his impressive skill and a couple of top-secret techniques. In plain English, this means they keep a crazy sharp edge for a long time but are much lower maintenance than traditional carbon steel blades. He sharpens blades in a unique way, making the back end more robust for chopping and the tip more precise for delicate work.
The dark finish of the Kokuen gives its name. Meaning ‘black smoke’ in Japanese, the Kokuen is inspired by the atmosphere of Masashi’s workshop.
First training with his brother at Yoshikane, then striking out on his own, Masashi Yamamoto relentlessly pursues the creation of a perfect knife using the traditional techniques passed down in his family and augmented by a modern understanding of metallurgy. He’s also a certified badass, forging in flip-flops and lighting cigarettes off red-hot steel like an 80’s action hero.
About the Shape - This is the knife for smaller jobs that are done on a cutting board. Perfect for slicing shallots, cutting herbs, and boning smaller proteins. Additionally, Petty knives are an indispensable tool for those who feel uncomfortable wielding a larger chef knife.
| Shape | Petty |
|---|---|
| Maintenance Level | Low |
| Blade Length | | |
| Blade Height | |
| Thickness | 2.6 mm |
| Weight | |
| Steel Type | |
| Rockwell Hardness | |
| Edge/Bevel | |
| Handle | Wa (Japanese) Handle - Octagon Red Ebony Water Buffalo Horn Collar |
| Knife Line | Masashi Kokuen |
| Blacksmith | Masashi Yamamoto |
| Made in | Sanjo, Niigata, Japan |
A note about measurements: Handmade Japanese knives can vary in their dimensions, so these measurements are only an example.
We aim to ship your order within 1 business day at Knifewear, if there is a hold up, we'll aim to let you know and give you a timeline.
We offer $3 shipping on orders over $100* anywhere in Canada and $200* to customers in the USA. We ship worldwide, and offer up to the minute rates from our shipping partner DHL.
*Konro Grills and some other larger items are excluded from the free shipping offer.
How do I make a return on an online order?
No worries, we've got you sorted. Head over to https://knifewear.mom/returns and follow the prompts.
Can I pick up my order Curbside / At the store?
Absolutely, as long as all the items you are looking for are in stock at the location you want to pickup from, you'll be able to select that at the checkout. If one or more items aren't at your preferred location we are happy to ship it to you.

Overall rating: 4.9 / 5 from 20 reviews.
Review topics: ["size","fit","finish","handle","craftsmanship","shape","staff","knife","blade","petty"].
"Added this to my Masashi collection to complete it. Zero regrets. Lightweight, another stunner in my kitchen."
"Masashi does not disappoint. This knifes a beauty! The construction and edge are among the best."
"This has become my favourite knife from my collection, looking to get more of Masashi’s master pieces"
"Fantastic smaller knife. Nice and lightweight which makes it feel effortless to use. Lovely addition to my collection. Thanks Knifewear for another purchase that will no doubt last a lifetime and beyond."
"Amazing in all aspects. Beautiful. Sharp. Weightless. This was my first Japanese knife, after a few days of owning this I also got the Kokuen Gyuto. Same review. Both knives are immaculate. I did not manage to snag the Nakiri before they sold out. Alas. Would LOVE to get them all."
"This knife is gorgeous--I will pause to appreciate its shape and beauty as well as the workmanship before diving in to the task at hand. The handle is comfortable and fits my larger hand well. The weight and balance are amazing, making it a breeze to work with. And the blade is lazer sharp; however, the blade is thin at the tip, meaning care has to be exercised in its operation."
"This is a fantastic knife! The profile of the blade makes it comfortable in the hand and on the board! Not quite sure how Masashi pulled that off. The performance of this knife is 10/10 and would definitely recommend that you get one for yourself! Unfortunately there is a but and the sole reason for the 4 star review. It's the handle... The specific combination of rosewood and buffalo horn I received missed the mark for me. I didn't see this variation when looking through all of the photos so I added a photo of my own. On the bright side this gives me an excuse to get a beautiful custom handle."
"This was my first Masashi knife (and it will not be the last) and I am blown away. The knife is insanely light in your hand and the sharpness is truly bonkers. As soon as I held this knife in my hand, I knew it was a winner. The blade is a work of art, Masashi-san is a true wizard. It's early days, but, in my small NYC sized kitchen, 'm willing to bet I will use this knife as much if not more than my Santoku/Gyuto. It's simply the perfect size and shape for a Petty, small and nimble enough for slicing small things but easily big enough to dice up an onion. As always with these knifes, it feels much bigger/longer in your hand than the picture suggests, so let go of any concerns you may have about it being too small. The team at knifewear is also incredible and were kind enough to send me a few photos of their stock so I could choose my perfect handle color."
"Light and dangerous, just what I wanted for shallots and detail cuts. Masashi knives are so underrated. 10/10"
"Awesome little knife! I have been slowly filling out the gaps in my collection and this knife was speaking to me, wanted a kiritsuke but needed a petty, so this was the perfect fit. My go to for smaller tasks when I don't feel like working with larger knife."