Japanese Bread Knife Guide
Sep 27, 2026
A bread knife is a long slicing knife with a serrated or wavy edge designed to bite through crust while reducing pressure on the softer crumb underneath. Japanese-made bread knives use the same practical principle, often with thin blades and carefully shaped serrations.
Why use serrations?
Serrations help the edge start on a hard crust while the recessed sections continue cutting with less downward pressure. That makes them useful for crusty loaves and delicate interiors.
What blade length works?
The blade should comfortably span the loaves you usually cut. Longer blades are useful for large sourdough and wide cakes; shorter bread knives can be easier to store and control.
Serrated vs straight edge
A straight sharp slicer can cut soft bread well, but crusty bread is where serrations are usually more forgiving. The teeth help start the cut without needing heavy pressure.
What else can a bread knife cut?
Serrated edges are also useful for tomatoes, sandwiches, soft cakes and foods with a firm exterior and delicate interior.
How should you use it?
Use a light back-and-forth slicing motion while letting the serrations do the work. Avoid pressing hard enough to compress the loaf.
Can bread knives be sharpened?
Yes, but serrated knives need a different method from plain edges. Each scallop is usually sharpened individually with a tapered ceramic or diamond rod, then the flat side is deburred lightly.
Care
Hand wash, dry promptly and protect the edge in storage. Avoid glass, stone and metal cutting surfaces.
See Japanese Special Knives Explained or browse Special Knives.
