Ajikataya is a series of knives manufactured in collaboration between son Mutsumi and father Tsukasa. The Hinoura family is one of the foremost blacksmithing families in Japan. All knives are hot-forged by hand, and no blade leaves Hinoura's hands before it is razor-sharp and forged to perfection. The Ajikataya series uses shirogami #2 carbon steel, hardened to 63 HRC. This is a very hard carbon steel that takes a razor-sharp edge. Hinoura's knives are extremely popular, and delivery times are very long.