Yoshikazu Tanaka Blue #1 Gokujyo Hon Kasumi Tall Gyuto 255 mm — Blade Only

This tall Gyuto is forged in Sakai by Yoshikazu Tanaka with an Aogami #1 (Blue #1) carbon-steel core, reactive soft-iron cladding, and a Gokujyo Hon Kasumi finish. The product record identifies Shotaro Nomura as the sharpener for this knife. The title uses the nominal 255 mm size; the measured cutting edge is 246 mm.

Handle not included: This listing is for the blade without a fitted handle. Browse custom wa handles and confirm compatibility and installation before ordering.

Use and Care

The core and cladding are reactive. Hand-wash and dry the blade immediately after use. Apply a light coat of food-safe camellia or mineral oil for longer storage. Use a suitable wood or soft synthetic cutting board, and avoid bones, frozen food, twisting, and hard impacts.

Specifications

Blacksmith: Yoshikazu Tanaka

Sharpener: Shotaro Nomura (Nomura Shōtarō / 野村 祥太郎)

Origin: Sakai, Japan

Profile: Tall Gyuto

Nominal size: 255 mm

Measured cutting edge: 246 mm

Overall length: 379 mm

Core steel: Aogami #1 (Blue #1)

Cladding: Reactive soft iron, Gokujyo Hon Kasumi finish

Blade height at heel: 57.75 mm

Spine thickness: 2.99 mm at heel; 2.23 mm at mid-blade

Weight: Approximately 165 g (blade only)

Hardness: Approximately 63 HRC

Handle: None