Yoshikazu Tanaka — Blue #1 Mirror Finish Bunka No Handle

Overview

Hand-forged in Sakai by master blacksmith Yoshikazu Tanaka, this 170 mm bunka pairs the laser-thin profile Tanaka-san is famous for with a mirror-polished soft-iron cladding over a keen Aogami #1 (Blue #1) core. The result is a razor-sharp, reactive blade that glides through proteins and vegetables alike while showing off a stunning reflective finish. At just 110 g it feels feather-light in hand, yet the 55.8 mm tall heel gives ample knuckle clearance for rocking, push-cutting, and fine tip work. Whether you’re a seasoned prep cook or a passionate home chef looking for a “do-everything” Japanese knife with show-piece looks, this limited bunka delivers precision, speed, and conversation-starting beauty.

Common Questions

Q: Is this knife suitable for home cooks?
A: Absolutely. The 170 mm length, light 110 g weight, and versatile bunka tip make it nimble for everyday chopping, dicing, and even delicate detail work.

Q: How should I care for a mirror-polished Blue #1 blade?
A: Wash by hand, dry immediately, and apply a light coat of food-safe oil between uses. The soft-iron cladding will develop a patina; think of it as the blade’s natural armor.

Q: What cutting board works best?
A: A Hasegawa, or Parker Asahi Cutting board is best to preserve the ultra-fine 63 HRC edge.

Specifications

• Core Steel: Aogami #1 (Blue #1)
• Cladding Type: Soft iron, mirror-polished
• Blade Length: 170 mm
• Overall Length: 288 mm
• Blade Height at Heel: 55.8 mm
• Spine Thickness (Heel): 2.38 mm
• Spine Thickness (Mid): 1.79 mm
• Spine Thickness (1 cm Behind Tip): 0.20 mm
• Weight: 110 g
• Handle Material: No Handle
• Hardness (HRC): ~63