Hatsukokoro Sumi Blue 2 Kurouchi Petty 80mm Black Chacate Handle binchotan VG10 steel at HRC 60–61

VG10 steel at HRC 60–61 offers good edge retention and is easy to sharpen

Produced by Aoki Hamono in Sakai

6mm at the spine throughout its length with a 25mm heel height

the reactive carbon core requires immediate drying and light oiling after use to prevent oxidation

It’s a whale of a knife—well

Hatsukokoro Sumi Blue 2 Kurouchi Petty 80mm Black Chacate Handle binchotan VG10 steel at HRC 60–61The Hatsukokoro Sumi Blue 2 Kurouchi Petty 80mm is a hand forged utility and paring knife with an octagonal Black Chacate handle, best fit for students and enthusiasts requiring a compact carbon steel blade for precision tasks. This 80mm petty profile suits in hand peeling, trimming, and detailed vegetable work, featuring a double bevel edge ground from Hitachi Blue 2 carbon steel. The Sumi line originates from the Tosa region and presents a rustic