Yu Kurosaki "Kokusenei" Aogami Super 170mm Bunka
SKU: 68372837045

Yu Kurosaki "Kokusenei" Aogami Super 170mm Bunka

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Description

Yu Kurosaki "Kokusenei" Aogami Super 170mm BunkaMaster Kurosaki has advanced his "Senko Ei" series by introducing the "Kokusenei," meaning "Black Sparkle." This Kurouchi version retains all the qualities of the original Senko Ei but features Aogami Super steel at its core. It's an excellent choice for those who appreciate Yu Kurosaki's craftsmanship and grinding but prefer carbon steel over the original R2 SG2 steel. Spec: Origin (Made in): Echizen, Fukui Prefecture, Japan Brand: Yu Kurosaki

Master Kurosaki has advanced his "Senko-Ei" series by introducing the "Kokusenei," meaning "Black Sparkle." This Kurouchi version retains all the qualities of the original Senko-Ei but features Aogami Super steel at its core. It's an excellent choice for those who appreciate Yu Kurosaki's craftsmanship and grinding but prefer carbon steel over the original R2/SG2 steel.

 

Spec:

  • Origin (Made in): Echizen, Fukui Prefecture, Japan
  • Brand: Yu Kurosaki
  • Craftsman: Yu Kurosaki
  • Knife Type: Bunka
  • Blade
    • Construction: San Mai
    • Grind: Double-edged Blade (50/50 Grind)
    • Hagane (Core Steel): Aogami Super 
    • Jigane (Cladding): Stainless Steel
    • Hardness: 63-64 HRC
    • Hand-sharpened
  • Blade Finishes:
    • Signature Tsuchime (Hammered)
    • Kurouchi
  • Blade Length: 170mm (6.7")
  • Blade Height (at heel): 47mm
  • Spine Thickness
    • Above heel: 1.8mm
    • Middle: 1.8mm
  • Handle
    • Shape: Hachikaku (Octagonal)
    • Material: Teak
    • Kuchiwa: Black Buffalo Horn 
    • Length: 127mm
  • Overall Length: 313mm
  • Weight: 119g (4.20oz) 
  • Engraved Mark: In Japanese Kanji "Kurosaki Yu" (黒崎 優)

About Yu Kurosaki 黒崎 優

A young artisan in his forties, Yu Kurosaki has become one of leading knife makers in Japan, winning top awards and attention for his hand-forged knives especially his Tsuchime finish. Inheriting over 700 years of knife making skills from previous generations of Echizen artisans, Mr Kurosaki has focused his career on making knives that give unforgettable impressions and incredible cutting pleasures. Yu's unique Tsuchime design, as seen in his Shizuku and Fujin series, are not only aesthetically magnificent but also incredibly functional when it comes to making food less likely to stick to blades. Today, Yu's works, hand made in small batches, have become so popular overseas that his top knives like the ones featured in Burrfection Store are increasingly hard to come by.

Care:

 

Aogami Super (Blue Super) steel is considered the most superior Japanese high carbon steel for knife making. It is not stainless, therefore you must wipe your knife dry after each use, in particular the core steel not covered by the stainless cladding. Patina will develop over time, which will appear as “discoloration” on the cutting edge, but that is the nature of carbon steel - not a defect. The stainless cladding covers a large part of the blade, making maintenance easier but still preserving the cutting and sharpening pleasure of the Aogami Super core. Avoid cutting into bones, frozen foods, hard fruit pits.

Cutting Surface:

Recommended cutting surface: wood, rubberized boards and high-end composites, and quality plastics such as polyethene make acceptable cutting surfaces, and will help protect and prolong knife’s edge. AVOID glass, metal, countertops, and other rigid, non-forgiving surfaces.

Sharpening:

We recommend sharpening all quality Japanese knives on whetstones, as we believe they yield the best results for your knives. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
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SKU: 68372837045

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Spinorpheus
Lake Worth, US
★★★★★ 2
Would not buy again
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
Would not order these again. Opening in bone is too small making it almost impossible for even a small dog to reach peanut butter inside.
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Reviewed in the United States on March 20, 2026
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Pat
Bozeman, US
★★★★★ 5
Perfect size
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
I like this size. I’ve gotten the larger ones in the past, but my 45 pound dogs can’t get to the center. This size works much better for them. They love them.
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Reviewed in the United States on January 21, 2026
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Pam Briggs
Boise, US
★★★★★ 1
my dog says NO
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
My dog sniffs both ends of this bone then walks away. I see in inside of it is very hard so I decided to soak it in some hot water for awhile and see what she does with it. If it works I will update. Update. Soaking didn't help. So that bone went in the trash.
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Reviewed in the United States on December 1, 2025
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Emma
Omaha, US
★★★★★ 5
My dogs love them
Flavor Name: Peanut Butter, Size: 4 Ounce (Pack of 1)
My dogs love these. They don’t last very long but my dogs are big, and they aren’t messy. I also like how they don’t stink like some chews.
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Reviewed in the United States on March 18, 2026
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Cindy J Mathieson
Lowell, US
★★★★★ 5
Long Lasting Doggie Chew
Flavor Name: Peanut Butter, Size: 4 Ounce (Pack of 1)
My dogs love these. They provide a tasty hard treat for them to chew on for hours, and even days. Once too small for safe chewing, you soak them in water then microwave it into a "puff."My dogs know when they are getting them as the aroma is ok. I buy these often and keep them on hand.
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Reviewed in the United States on October 21, 2025

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