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Hatsukokoro  |  SKU: HS-AOSA-B2KU-PE150BC

Hatsukokoro Aosagi Blue 2 Kurouchi Petty 150mm Black Chacate

$189.95

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Detailed Specifications
Line Hatsukokoro Aosaji Kurouchi B2
Profile Petty / Utility, Paring
Bevel Type Double Bevel
Weight 82 g        2.89 oz
Edge Length 155 mm   .6.1 inch
Heel Height 28 mm     .1.1 inch
Width @ Spine 2.2 mm     0.09 inch
Width @ Mid 2.0 mm     0.08 inch
Width @ 1cm from Tip 0.6 mm     0.02 inch
Steel Blue 2 / Aogami #2 | Carbon
Blade Construction Sanmai - Soft Iron Clad
Hardness (HRC) 61 - 63
Surface Finish Kurouchi
Handle Octagonal Black Chacate
Region Hyogo
Best for
  • Pro chefs
  • Enthusiasts
  • Students
    • Free shipping for knives over AU$200 Australia wide.
    • World-wide shipping via DHL Express, 3 to 5 days.


    Hatsukokoro’s Aosaji (Grey heron, 青鷺) combines traditional craftsmanship with high performance at an affordable price. Featuring a Blue #2 carbon steel core, these knives deliver an exceptional cutting feel, with superior sharpness and edge retention.

    Crafted in Sakai, one of Japan’s most renowned knife-making regions, the Aosaji knives showcase a rustic kurouchi finish, giving them a unique, handcrafted appearance that adds to their traditional appeal. This finish not only looks striking but also offers a bit of protection against corrosion. However, the iron cladding of the blade requires careful maintenance, as it is prone to rust. To preserve its condition, the blade should be wiped dry immediately after use.

    Despite their premium materials and craftsmanship, the Aosaji knives are very budget-friendly, offering exceptional value for those looking to invest in high-quality Japanese cutlery without breaking the bank.

    Pros Cons
  • Budget friendly
  • Workhorse grind
  • Great for professionals
  • Need extra care
  • Prone to rust
  • Fit and finish can be improved

  • 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

    An emerging brand rapidly building up its reputation internationally, Hastukokoro offers a great selections of premium hand crafted knives sourced from makers all over Japan. Top tier knife makers such as Yoshikane, Nigara and Nakagawa Hamono all send their best knives to Hyogo.

    • Profile: Petty

      Utility, Paring

      The Petty knife, a smaller Japanese utility knife, serves as an ideal tool for precision tasks such as peeling, trimming, and slicing fruits and vegetables. With a blade length ranging from 120mm to 180mm (4.7 to 7 inches), it stands out for its ability to handle detailed work like deveining shrimp or cutting garnishes. Its slightly longer and slimmer profile compared to the Western paring knife enhances its functionality for intricate tasks, making it a valuable addition to any kitchen toolkit.

      Slide for more >>

    • Steel: Blue 2 / Aogami #2

      Blue Steel No.2, also recognized as Aogami No.2, is a distinguished high carbon steel produced by Hitachi Metals Ltd, enhanced by the addition of chromium and tungsten to the base of White Steel No.2. This modification brings about an improvement in toughness and the creation of hard carbide molecules, which significantly boost edge retention. Although its sharpness is comparable to that of White Steel No.2, Blue Steel No.2 offers a slight advantage in maintaining its edge.

      Widely favored for its versatility, Aogami No.2 is celebrated for its ease of sharpening and robust resistance to chipping, making it an ideal choice for those new to Aogami steel knives. Containing 1.0–1.2% carbon and achieving a typical hardness of 62–63 HRC on the Rockwell scale, it stands as the benchmark in evaluating Aogami steel cutlery.

      Manufacturer:

      • Hitachi Special Steel, Japan

      Nature: Carbon

      Hardness: 61- 63

      << Slide for more >>

    • Construction: Sanmai - Soft Iron Clad

      Sanmai iron cladding is a traditional Japanese knife construction technique where a hard steel core is sandwiched between two layers of softer iron or steel. This method combines the superior edge retention and sharpness of high-carbon steel with the durability and ease of maintenance provided by the softer outer layers. The sanmai structure offers a balanced knife that is both flexible and resistant to breaking, ideal for precision cutting tasks. The softer outer layers also facilitate easier sharpening and contribute to the aesthetic appeal of the knife through the development of a unique patina over time. While sanmai-clad knives require careful maintenance to prevent rust, their exceptional performance and distinctive appearance make them often a desirable feature of Japanese knives.

      << Slide for more >>

    • Finish: Kurouchi

      Kurouchi refers to the rustic, unpolished finish found on the blade of many traditional Japanese kitchen knives. This blacksmith's finish is characterized by its dark, textured appearance, which is the result of leaving the blade forge-scale on the steel during production. Kurouchi finish not only adds a unique aesthetic appeal but also provides certain practical benefits. It acts as a protective layer against rust and corrosion, and helps to reduce food sticking to the blade during cutting. Commonly seen on high-quality, hand-forged knives, the kurouchi finish emphasizes the artisanal nature of the knife and its heritage, making each piece distinctively unique.

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    • Handle Specs

      Profile: Octagonal WA

      Material:

      • Black Chacate

      Black Chacate is a highly valued timber known for its deep, rich brown to almost black coloration, fine texture, and exceptional durability. It polishes well, offering an exquisite finish that highlights its subtle, elegant grain patterns. This wood is often used in fine woodworking projects, including luxury furniture, decorative items, and high-end knife handles.

      An octagonal wa handle made from Black Chacate wood would exhibit a sleek, geometric shape that fits comfortably in the hand, enhancing the user's grip and control. The deep hues and natural luster of Black Chacate add a touch of sophistication and unparalleled beauty to the handle, making it not only a functional component of a kitchen knife but also a piece of art. The durability and stability of Black Chacate ensure that the handle withstands the rigors of kitchen use while maintaining its aesthetic appeal over time.

      << Slide for more

    Hatsukokoro

    Hatsukokoro Aosagi Blue 2 Kurouchi Petty 150mm Black Chacate

    $189.95

    Discover the precision and craftsmanship of the Hatsukokoro Aosagi Blue #2 Kurouchi Petty 150mm, a compact Japanese kitchen knife designed for intricate tasks. Forged from Blue #2 steel, known for its sharpness, edge retention, and ease of sharpening, this 150mm petty knife is perfect for peeling, trimming, and other detailed kitchen work.

    The blade features a rugged Kurouchi finish, enhancing both its strength and aesthetic appeal while reducing food adhesion. The handle, crafted from luxurious black chacate wood, provides comfort and control, making it an ideal tool for professional chefs and home cooks alike. Each Hatsukokoro knife reflects meticulous Japanese craftsmanship, combining traditional techniques with modern innovation.

    Upgrade your kitchen with the Hatsukokoro Aosagi Blue #2 Kurouchi Petty, available at Knives and Stones, Sydney. We offer price match and in-store test cuts.

    Features:

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