Yoshihiro Hongasumi Blue Steel Deba fish fillet Chef knife

The Yoshihiro Hongasumi Blue Steel Deba Filet Japanese Knife is expertly forged from High Carbon Blue Steel #2 with a HRC of 63-64, offering superior edge retention and the ability to take a finer edge compared to Kasumi Deba knives made from White Steel #2. This makes it an excellent choice for intermediate-level chefs. It comes ready to use out of the box and includes a Magnolia wood sheath, knife oil, and a rust eraser for ongoing maintenance. Handcrafted in Japan, this knife is a unique, high-quality piece—not mass-produced.

Designed for carving and filleting fish, as well as some meats, the Yoshihiro Hongasumi Blue Steel Deba Knife features a heavy, single-edged blade that easily cuts through fish flesh and meat. The Hongasumi technique, which layers softer steel over a hard steel core, results in a higher-quality kasumi knife. The Blue Steel #2 core offers exceptional sharpness and edge retention, while the surrounding iron adds the durability needed for regular use.

Crafted using traditional Japanese techniques, the Yoshihiro Hongasumi Blue Steel Deba Knife features a flat ground front (shinogi) and a concave ground back (urasuki) with a flat rim (uraoshi). This traditional construction enhances sharpness and cutting performance. The octagonal handle is made from magnolia wood and water buffalo horn, providing comfort and control during use. The blade also showcases the mist-like pattern characteristic of the forging process, adding beauty to the knife’s functional design.

For proper care, sharpening and honing should be done with Japanese water stones. Hand wash and dry immediately after use, especially when working with acidic ingredients, to maintain the blade. This knife is intended for use on boneless fish flesh and should not be used on bones.