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Hatsukokoro  |  SKU: HATS-VT2KJK-GY240-GRN

Hatsukokoro Kujaku V-Toku-2 Gyuto 240mm Rainbow Damascus Finish Green

Regular price $399.95

IMPORTANT: Carbon steel knives can rust or patina quickly if not cared for properly. They require regular cleaning, drying, and oiling. If you are unfamiliar with carbon steel maintenance, we recommend choosing a stainless steel option instead.

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Availability

  • St Peters, NSW —
    2 Bishop St, Unit 2, St Peters NSW 2044
  • Crows Nest, NSW —
    107 West St, Shop 1, Crows Nest NSW 2065
    Pickup only
  • Prahran, VIC —
    180 Commercial Road, Shop 1, Prahran VIC 3181
    Pickup only
Detailed Specifications
Line Hatsukokoro Kujaku V-Toku 2
Profile Gyuto / Chef's knife
Bevel Type Double Bevel
Weight 204 g | 7.2 oz
Edge Length 245 mm | 9 41/64″
Heel Height 50 mm | 1 31/32″
Width @ Heel 2.3 mm | 3/32″
Width @ Mid 2.2 mm | 3/32″
Width @ 1cm from Tip 1.1 mm | 3/64″
Steel V-Toku 2 | Carbon
Blade Construction Sanmai - Stainless Damascus Clad
Hardness (HRC) 62 - 64
Surface Finish Etched
Handle Octagonal Colored-handle with Acrylic Ferrule
Region Hyogo
Best for
  • Enthusiasts
  • Pro chefs
  • Free shipping for knives over AU$200 Australia wide.
  • World-wide shipping via DHL Express, 3 to 5 days.


The Rainbow Damascus is no longer rare in the industry, but I think many of us still remember how stunning it was when we first came across it. Hatsukokoro didn't settle on their Hayabusa Blue 2 Rainbow Damascus line but decided to push it even further, which leads to this brand new line Kujaku(孔雀, Peacock)which is an upgrades in all aspects compare to the Hayabusa.

The core steel of the Kujaku is Takefu Special Steel's V-Toku 2. Takefu says its chromium, tungsten and vanadium form hard, compact carbides that improve durability. Being an alloy carbon steel, it reaches a hardness of HRC64 or more by Takefu's figure and can produce a really fine cutting edge, which is what people look for when they are getting a carbon steel knife.

The cladding material is still the highlight of the show. On top of the layers of copper, brass and steels, Hatsukokoro applied a well controlled etching, which transfer the colour of each metal on the surface. The brass gets a deeper, gold-like look, the V-Toku core turns light grey and the copper picks up a mesmerising purple colour. It is really easy to see how this line got this name, the entire surface of the blade just shines in metallic reflection like the peacock feather.

The blade has a pretty thin edge and a slightly convex geometry. Pairing with an acute carbon steel edge, it will perform fairly well for a knife that focuses on aesthetic. One benefit of the etching is, it creates a layer of oxidation over the carbon core steel, which acts like patina and slows down rusting, which makes the knife easier to look after as it also have stainless cladding.

Kujaku shows Hatsukokoro's continuous innovation in product design and their focus on different way of finishing their blades. As the result, this line get a very attractive and unique look. In my opinion, this is a very good option for gifting, especially to those who already have a decent Japanese knife and look for trying out carbon steel. The smooth cut and dazzling look can surely make the Kujaku a impressive gift.

Pros Cons
  • Great artistic
  • Great OOTB
  • Thin behind the edge
  • Prone to rust
Care Instruction
  1. Don't cut hard things! Japanese knives are brittle so bone hacking is a NO NO!
  2. Wash with neutral detergent after use, and wipe dry;
  3. Please don't wash knife with dishwasher, it will damage the wood handle;
  4. Be careful not to leave the knife close to a heat source for a long time;
  5. It is a lot more dangerous to cut with a blunt knife than a sharp knife!
  6. It is best to sharpen a Japanese knife regularly on a waterstone.
  7. Oil the (carbon) knife if storing for an extended period of time to prevent rust.

Hatsukokoro

Hatsukokoro, a knife brand from Amagasaki

Hatsukokoro (初心) is a knife brand from Amagasaki, Hyogo, launched in 2019. It is a brand rather than a forge: it works with knife makers instead of forging itself.

The name comes from the proverb 初心忘るべからず, roughly never forget your beginner's mind. For the same characters the brand chose the gentler reading hatsukokoro over shoshin.

The brand's own catalogue names the place behind some of its lines, and the maker behind a few: Shinkiro comes from Fukushima, and Hayabusa HAP40, Saihyo and Sunaarashi from Seki City, while for others the maker or the place stays private. Some of our listing titles also carry the maker alongside the brand, such as Hatsukokoro x Yoshikane and the Hatsukokoro x Yoshihiro Yauji collaboration.

The Hatsukokoro lines we list include both carbon and stainless steels. Our listings include Hayabusa in SG2 and Aogami Super, Saihyo in SG2 and Ginrei in Ginsan. Carbon steel kurouchi lines include Aosagi, Aokitae, Kurokaze and Kurogane.

“A knife brand from Amagasaki that works with knife makers rather than forging.”

Est. 2019 | 令和元年
Known for Lines made with partner makers, from Seki City to Fukushima
Website handk.co Instagram @handk_official Read more about Hatsukokoro

Hatsukokoro · Hyogo

Knife details

Frequently asked questions

Gyuto or santoku: which should I choose?

Both are all-purpose Japanese knives, and for most home cooks either will handle the bulk of daily prep. The choice comes down to length, blade shape, and how you like to cut.

A gyuto is the Japanese chef's knife, with a gently curved edge that lets you rock and slide through cuts as well as chop. Tojiro's guide to Western knife shapes gives 150 to 210mm as the household size for a gyuto and up to 360mm for professional use. The extra length and pointed tip give you reach and versatility, from proteins to large produce.

Tojiro's guide to Japanese knife shapes gives 165 to 170mm as the household size for a santoku, which has a flatter profile and a rounded sheep's-foot tip. It rewards a straight up-and-down push cut, feels nimble in smaller hands or tight kitchens, and is the classic Japanese household knife.

Rule of thumb: choose a gyuto if you want one do-everything knife with more reach, or a santoku if you prefer a compact, easy-to-control blade. Plenty of our customers end up owning both.

What is a gyuto knife used for?

The gyuto (牛刀) is a chef's knife for all kinds of cooking, and it is basically double-bevel. A knife maker's guide says it came to Japan in the Meiji era with the culture of eating beef, which gave it its name, but it does not cut only meat.

A Japanese dictionary describes the gyuto as slimmer than a santoku, with a pointed tip, used widely for meat, fish and vegetables.

What gyuto length should I choose?

A knife maker's guide lists 150 to 210 mm, double-bevel, for home use, and 180 to 360 mm, single- or double-bevel, for professional kitchens.

We suggest starting with a 210 mm gyuto for a home kitchen, and stepping up to 240 mm if you regularly cut large pieces and have the board for it.

240mm vs 210mm gyuto: which size should I choose?

Get the 210mm. We only point people to a 240mm when they have about 45cm of usable board, cook in volume, and regularly break down big roasts or whole fish.

On the gyutos we've measured for our product pages, the extra length is real. As of October 2026, the 210mm gyutos we list have a median edge of 213mm from heel to tip, across the 111 we have measured; the 240mm ones have a median of 240mm, across 100. The 240s are also heavier, 212g against 175g at the median, and a touch taller at the heel, 50mm against 48mm.

That length buys you a longer stroke. A 240 goes through a big piece of meat in one or two pulls and moves a board of chopped vegetables with less shuffling. It costs you board space and control. On a small board the tip hangs off the edge, and fine work like herbs and shallots feels like more knife than the job needs.

Japanese or German kitchen knives: which should I buy?

Our advice: choose a Japanese knife if you want the keenest edge and do not mind caring for a harder blade, and a German knife if you want a tougher, more forgiving knife you can hone casually and use for heavy prep. On two Japanese knife steels, the steel makers' own figures start at 60 HRC: Takefu Special Steel rates VG10 at 60 HRC or more, and Proterial lists the hardening hardness of Aogami 2 (Blue 2) as over 60 HRC.

Our care advice for a Japanese knife: keep it off bone, frozen food and very hard squash, and use a wooden or plastic board.

What is the flat spot on a knife, and is it the same as the "sweet spot"?

The flat spot is the straight run of edge from the heel towards the middle, the part that meets the board along its length. At our counter we call it the sweet spot; elsewhere "sweet spot" often means the balance point, so ask which one someone means.

Past the flat, the edge curves up towards the tip (the belly), which suits a swinging or pulling stroke. Sharpeners also say "flat spot" for a worn patch of edge, so when you mean the shape, "the flat part of the edge" is clearer.

Is V-Toku 2 the same as Blue 2?

No, they are different steels from different manufacturers: V-Toku 2 is an alloy blade steel in Takefu's V-steel range, and Aogami 2 (Blue 2) is made by Proterial.

Takefu's table gives V-Toku 2 1.05% carbon, 0.25% chromium, 1.25% tungsten and under 0.20% vanadium, with a hardness of HRC 64 or more; Proterial gives Aogami 2 1.05 to 1.15% carbon, 0.20 to 0.50% chromium, 1.00 to 1.50% tungsten and no vanadium listed, with a hardening hardness over 60 HRC. Both are carbon steels that can rust, so dry the knife after washing.

What is V-Toku 2 steel?

Takefu Special Steel lists it as an alloy blade steel in its V-steel range, where chromium, tungsten and vanadium form hard, compact carbides that improve durability, at a hardness of 64 HRC or more.

The knives we list as Hatsukokoro Kujaku have a V-Toku 2 core. Its 0.25% chromium is below the Japan Stainless Steel Association's 10.5% minimum for stainless, so dry it after use.

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