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By Motokyuuichi

Hatsukokoro Motokyuuichi Kurosagi AS

Sanmai - Soft Iron Clad Kurouchi Blue Super / Aogami Super / Carbon Nagasaki, Japan

This isn’t a knife for Instagram – it’s a hardworking Aogami Super beast with a cult following among chefs who care more about cutting than cosmetics. Master smith Motokyuuichi (of "Tsubaya Black" fame) applies his legendary low-temperature, long-soak heat treatment to Hitachi’s premium steel, achieving a 64+ HRC edge that stays viciously sharp yet resists chipping.

The hand-forged AS core is clad in soft iron, with a deliberately rustic finish – uneven hammer marks, subtle warps, and all. These aren’t flaws; they’re proof of real workshop craftsmanship over factory perfection. Expect stellar food release from the coarser finish, and a thin-but-sturdy grind that handles everything from herbs to squash.

Why it’s a sleeper hit:
→ Unmatched edge retention – "Stays sharp longer than knives twice its price" (Reddit user)
→ Forgiving toughness – Motokyuuichi’s tempering prevents AS’s usual brittleness
→ Zero pretension – No fancy branding, just a fierce cutter that pros quietly recommend

For those tired of overpolined "luxury" blades, this is the anti-status-symbol workhorse – rough around the edges, relentless where it counts.

Pros

  • Budget friendly
  • Excellent performance
  • Workhorse grind

Cons

  • Relatively hard to sharpen
  • Prone to rust
  • Fit and finish can be improved

Best For

  • Pro chefs
  • Enthusiasts
Construction
Sanmai - Soft Iron Clad
Surface Finish
Kurouchi
Steel
Blue Super / Aogami Super / Carbon
Origin
Nagasaki, Japan
Kurouchi Aogami Super Tosa Rustic