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Custom Kuro-uchi Santoku Funayuki 155mm (6.1")_1
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Custom Kuro-uchi Santoku Funayuki 155mm (6.1")_11

Yoshida Hamono

Custom Yoshida Santoku Funayuki SUJ-2 Kuro-uchi 155mm (6.1")


Only 0 left in stock

🚩 The blade develops patina, but improper use can also lead to rust formation.

☝️ We assemble custom knives after an order has been placed. Assembly takes 2 business days which will affect shipping date, please plan accordingly.

✔︎ No import fees & duties - worldwide
✔︎ All taxes included
✔︎ Express worldwide shipping
✔︎ 30-day return policy

Yoshida Santoku Funayuki SUJ-2 Kuro-uchi 155mm (6.1") blade paired with our SharpEdge stabwood handles.

Santoku Funayuki is a jack-of-all-trades in the kitchen and will excel at all types of chopping and slicing on the kitchen board; you might find it a touch short only for very large chunks of meat.

We chose a universal, octagonal shape that comfortably fits the hands of both right- and left-hand users. It offers a firm grip for easy and comfortable use.

Handles are made of natural maple wood, which undergoes a special procedure of stabilization with resin. This ensures a long service life of the handle. During this process of stabilization, a color pigment is added which penetrates the wood in different ways, creating unique patterns. This makes every handle one-of-a-kind.

Compared to the basic Santoku knife shape, the spine of funayuki’s blade tapers towards the tip, creating a slight curve between the tip and the midsection. The standard shape of a santoku knife featuring a straight edge with a narrow sheep’s foot blade thus transforms into a blade that looks like a deba but is better suited to precision cutting, where you need really thin cuts (this makes it unsuitable for cutting through bones or making more robust cuts). As opposed to a forward and backward motion slicing technique that is characteristic of santoku knives, the curved belly requires a rocking back and forth motion. A pronounced tip and triangle design are perfect for cutting smaller pieces of meat and for filleting fish.

The word funayuki means “the boat (ocean) goes” and the knife was originally used on fishing boats, primarily as a lightweight fillet knife to test the quality of the catch, as well as to prepare meals at sea and perform a range of cleaning and prep jobs.

In short: funayuki blade is a superb hybrid between various traditional shapes of Japanese knives, such as gyuto, santoku and deba, which makes it a versatile, all-around knife for various tasks in the kitchen.

Yoshida Kuro-uchi series knives are traditional Japanese rustic knives. Its price is very affordable for the quality of a hand-forged knife. It is suitable for the first purchase of a traditional Japanese knife. The blade is forged in SUJ-2 steel, which offers incredible capacities, hardness is 63-64 HRC, and at the same time the knife is very easy to resharpen. The blade needs some extra care. After the use rinse it well and dry it. The name of kuro-uchi refers to the final look of the blade, which is unprocessed on the top and has already developed dark patina, which protects the blade.

The knife is manufactured at the smithy of Yoshida Hamono in Japan, a family company with an age-long tradition in manufacturing state-of-the-art tools and Japanese swords, i.e. katanas, by hand. Yoshida Hamono has a great deal of experience forging ZDP-189 steel in the traditional manner.

Blade shape: Santoku

Steel type: SUJ-2

Blade construction: San-mai / convex v-edge / kuro-uchi

Hardness (HRC scale): 63-64

Overall length: 310mm (12.2")

Blade length: 155mm (6.1")

Blade height: 47mm (1.8")

Spine thickness: 2mm (0.09")

Weight: 150g (5.3 oz)

Handle length: 128mm (5.0")

Handle type / wood: Japanese / Maple stabwood

Kanji on the blade: 特製 Tokusei / specially made product by Yoshida Hamono

Blacksmith: Yoshida Hamono

Location of the smithy: SAGA / Saga Prefecture / Japan

☝️ Japanese kitchen knives in our store are handmade from natural materials. Slight variations in color, texture, weight and other dimensions are possible. We try to give a good photographic representation of our products, however computer screen resolution and colors do vary, so products might not look exactly as they are seen on screen.


Knives made of carbon steels can, due to their low chromium (Cr) content, discolor and develop patina. The knife is the most sensitive when it is still new and a patina had not developed yet, but later, patina will protect the blade. These types of knives require a touch more care:

✔ Wipe it regularly with a clean and dry cloth (you can also do this during use).
✔ After use, rinse it with lukewarm water and wipe it dry.
✔ Coat it regularly with knife maintenance oil or plain refined sunflower oil.
✔ Store the knife by wrapping it in paper which will absorb moisture and protect the blade.

A patina is a thin layer that forms on the surface of oxidized steel and protects it from further oxidation. The patina should not be confused with rust. Patina protects the blade, while rust causes corrosion and deterioration of material, so it should be removed (see Rust erasers).

→ For in-depth information about patina, read our dedicated post on patina.


Blade wear depends on the quality of steel, usage and maintenance of the blade. Japanese knives are made of high-quality steels. Follow these tips to keep your Japanese knife in top-notch shape:

✔ Use a wooden, plastic or rubber cutting board.
✔ After use, wash the knives and wipe them dry.
✔ For storage, use a knife holder or a protective knife sheath (saya).
✔ A good cutting technique is your best bet to prolong sharpness.
✔ Use sharpening stones to sharpen the knife.

❗️Don’t leave the knife in the sink. Wash it by hand.
❗️Don’t wash the knife in the dishwasher.
❗️Don’t use the knife on glass, ceramics, marble or steel surfaces.
❗️Don’t scrape the food off the cutting board with the edge of the blade. Use the spine of the knife instead.
❗️Knife is a tool intended for specific use - cutting food. It is not a can opener, screwdriver, trowel, wire cutter, hammer etc.

→ For more details, read our guide
Maintenance of Kitchen Knives.

🤙 Contact us if you need some help. We reply within 1 business day.

- €10
- flat worldwide rate with DHL Express (express delivery, 2-5 business days).
- FREE - all orders over €300 (DHL Express).

- United Kingdom
- shipping to UK costs €15. All orders are shipped with UPS Express (2-3 business days). Free shipping on orders over €300.
- Russia (currently not available) - shipping to Russia costs €40. All orders are shipped with EMS postal service.

We ship all orders DDP (duties & taxes paid). This means you will not be charged for any import fees and taxes (including VAT). All our prices are final. The price you see at checkout is the final price, no hidden costs.

- Europe:
1-2 business days
- US & Canada: 2-4 business days
- Rest of the World: 3-5 business days

Our return policy lasts 30 days. If more than 30 days have gone by since the day you received your order, unfortunately we can’t offer you a refund or exchange.

→ Read our SHIPPING & RETURNS policy for more info. We strive to solve any issues fast and with as little hassle for you. If you have some additional questions, please contact us.

We paired this blade with our traditional custom-made maple burl handles

select your favorite

→ NIKKO MOSS remind us of the ancient moss covering the stone walls of the old temples of Nikko. It is not unlike holding a soft piece of velvet in your hand.⁠

→ TOTTORI SAND takes us on a walk across the Tottori dunes of western Japan⁠. A sandy brown color is inspired by the infinitely swirly sand dunes.

→ TOKYO NIGHT reminds us of the flashing lights of Tokyo’s Harajuku.⁠ The color of these handles varies from light to dark grey, with soft or deep hues of red and swirls of cream.

→ OKINAWA REEF transports you to the clear waters of Okinawa island. ⁠A soothing, emerald green color. It feels like immersing your hand in shimmering coastal waters during summer.

→ KYOTO SUNSET warms us with the glow of sunset over Kyoto. It feels like holding something smooth and warm in your hand – a glow in the sky at sunset or a burst of bright autumn color.

If you like a particular color hue, please contact us before placing an order.

Each knife comes with:

✔️ Instructions and knife care leaflet.
✔️ A preventive Band-Aid – the knives are very sharp! 😉
✔️ Original box from the blacksmith, which we wrap in an old Japanese newspaper sheet – so every knife is ready to be passed on as a gift as soon as it hits your doorstep!
✔️ We also offer a special gift wrapping option with the traditional Japanese washi paper.

Express Worldwide shipping

10€ flat rate with DHL Express.
Free on orders over 300€.

No Duties & Fees

We cover any import fees, worldwide.
All prices are final, tax included.

Easy Returns

Something not OK? You have 30 days to return it, no questions asked.

Attentive support

Get in touch, we usually respond within a few hours.


Still doubting which type of Japanese knife should best fit your needs? 

We created a 5-steps quiz to help you find the perfect knife based on your cooking skills and the type of food you prepare.

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