Sakai Knife Making Forged Steel Tradition Osaka

Sakai City, Osaka Prefecture — documented knife production since 14th century, current tradition from 16th century

Sakai City in Osaka Prefecture has produced Japan's finest hand-forged kitchen knives for over 600 years, beginning with the importation of tobacco-cutting blade techniques from Portugal in the 16th century and evolving into the center of professional Japanese kitchen knife production supplying approximately 90% of knives used by Japanese sushi chefs and kaiseki cooks. Sakai knives are distinguished by their single-bevel (kataba) construction — a flat back face and hollow-ground chisel edge — which allows the extreme sharpness and clean slicing action demanded by professional sashimi and sushi preparation. The production process involves several specialist artisans: the jigane smith who hammers and shapes the soft iron body (jigane), the forge welder who attaches the hard hagane steel cutting edge, the sharpener who grinds the initial geometry, and finally the handle setter. This division of labor allows each craftsperson to specialize in a single phase, producing higher quality than a single-person generalist approach. Key Sakai knife styles include yanagiba (long-bladed sashimi), deba (heavy fish butchery), usuba (thin vegetable), and takohiki (rectangular-tipped octopus slicing).

Not a flavor element — but single-bevel construction enables cellular precision cuts that minimize protein fiber compression, producing cleaner surfaces that reflect light and absorb soy sauce more uniformly