The Miyabi Kaizen II is what happens when Zwilling — the German house behind the Pro S — builds a knife the Japanese way in its Seki, Japan factory. Where the Zwilling is heavy, soft and forgiving, the Miyabi is hard, thin and keen to a fault. It is one of the few off-the-shelf knives that arrives with a genuinely hand-finished edge, and it shows the moment it touches a tomato. The question is whether you can keep an edge this fine alive.
What the spec sheet tells you
The blade is FC61 — a fine-carbide stainless — forged and hardened to about HRC 60, then ground and hand-honed with the three-step Honbazuke process to roughly 9.5–12° per side. That last number is the story: most good Japanese knives sit around 15° per side, so a sub-12° Honbazuke edge is dramatically more acute — it falls through food with almost no resistance. The hard FC61 steel is what lets that thin edge hold; a soft German blade ground this fine would fold immediately. More on why hardness and geometry decide the cut in our steel guide.
How it feels to use
Effortless, and a little intimidating. The out-of-box edge is the keenest in our whole lineup — it scores a 10 on our out-of-box metric — and the Micarta handle and forged body feel like a knife you look forward to picking up. But the same geometry that makes it glide makes it the most chip-prone knife we cover: a very acute, very hard edge has no give. Hit a bone, twist through a squash, or drop it on a tile floor and you can take a chip out of the apex — and unlike a soft German edge that rolls back with a rod, this one has to be ground back on a stone.
Who it's for
A cook who already sharpens on a stone and wants the finest edge money can reasonably buy. It's a headline knife in our best Japanese chef knives and best chef knives in the world lists for that reason. It is emphatically nota first knife: if you can't yet maintain a hard Japanese edge, you'll chip it and be unable to fix it. Start on a Tojiro or Victorinox, learn the skill, then graduate to this.
Value
It's expensive, and the returns diminish sharply versus a Tojiro DPif you don't sharpen well — a dull Miyabi cuts worse than a sharp $75 knife. Judged as an object and an edge for someone who willmaintain it, though, it's the real thing: a hand-honed edge and hard steel with no marketing shortcuts. Buy it for the craft and the cut, not as a value play — the value knives live elsewhere on the site.
