Miyabi Kaizen II: A Complete Review

The Miyabi Kaizen II is one of the best kitchen knives you can buy without spending over $200 per knife, and it makes sense to understand exactly why before you decide whether it fits your kitchen. Miyabi is a premium Japanese knife brand owned by Zwilling J.A. Henckels, produced in Seki City, Japan (the global center of knife manufacturing). The Kaizen II is their mid-tier line, sitting between the entry-level Miyabi Red and the top-tier Miyabi 5000MCD.

This guide covers the Kaizen II's construction, steel, performance, how it compares to alternatives, and who it's genuinely right for.

What "Kaizen" Means and What It Tells You About the Knife

Kaizen is a Japanese concept meaning continuous improvement. Miyabi uses it for two lines: the original Kaizen and the Kaizen II. The Kaizen II is the updated version with improved materials and construction over the original.

The Kaizen II uses FC61 "Fine Carbide" steel, a proprietary Zwilling steel alloy hitting 61 HRC on the Rockwell scale. That hardness puts it in the premium range, harder than most German knives (58 HRC) but slightly softer than the most elite Japanese options (65-67 HRC). At 61 HRC, you get excellent edge retention without the maximum brittleness of the hardest steel.

Blade Construction and Design

The Kaizen II uses a multi-layer construction: an FC61 core steel is clad in 48 layers of stainless steel (24 per side), creating the distinctive Miyabi Damascus pattern on the blade. The Damascus layers aren't just aesthetic. The softer stainless cladding protects the hard core steel from lateral stress and environmental exposure.

The blade features a traditional Japanese profile: a thin spine, a long flat section with gentle curve, and a sharp tip. The geometry is different from German knives. There's no pronounced bolster stopping your hand from sliding to the blade, which means you can fully choke up to the blade for a proper pinch grip. The blade is thinner behind the edge than German knives, giving noticeably less resistance when cutting.

The spine is octagonally shaped near the blade heel, tapering to a standard round cross-section toward the handle. This is an unusual design detail that gives you a slightly different grip feel depending on where your hand sits.

The D-Shape Handle

The Kaizen II uses a D-shaped handle in black pakkawood (resin-stabilized birch wood). The D-shape orients in your hand naturally, with the flat face facing down toward the cutting board. This is a traditional Japanese wa-style influence applied to a Western handle form.

For right-handed cooks, the D-shape fits ergonomically. For left-handed cooks, the asymmetric shape is slightly less comfortable. True wa-handle versions of knives (like what you'd find on a Konosuke or Takamura) can be ordered in left-handed configurations. The Kaizen II's handle doesn't have that option.

How the Kaizen II Performs

At 61 HRC with the thin Japanese geometry, the Kaizen II cuts cleanly and precisely. Here's what actual cooking with it feels like:

Slicing proteins: The thin blade and fine edge mean the knife moves through chicken breast, pork tenderloin, or fish fillet with minimal resistance. You can slice thin for carpaccio or thick cuts with equal precision.

Vegetable prep: The flat section near the heel makes push cuts clean and efficient. Dicing onions, julienning carrots, chiffonade of herbs. All easier than with a thicker German blade.

Hard vegetables: Treat these with care. The hard 61 HRC steel chips more easily than German steel. Butternut squash and sweet potato can be done, but use a careful downward pressure without lateral torque. Don't use a rocking cut that puts sideways stress on the blade.

Edge retention: This is where the Kaizen II shines versus German alternatives. The harder steel holds its edge significantly longer between sharpening sessions. Home cooks who sharpen their German knives every 3 months might go 6 months or more between sharpenings on the Kaizen II.

For a broader comparison of where knives like the Kaizen II sit in the premium Japanese category, our Best Kitchen Knives guide covers the full spectrum.

Miyabi Kaizen II vs. Alternatives

Miyabi Kaizen II vs. Shun Classic: Both are Japanese-made knives in the 60-61 HRC range with Damascus construction. The Shun Classic uses VG-MAX steel; the Kaizen II uses FC61. Edge-to-edge performance is very similar. Shun has a more traditional Western handle style. The Kaizen II D-shape is more ergonomic for many cooks. Pricing is comparable, with both typically running $140-180 for a chef knife. I give the Kaizen II a slight edge in handle ergonomics and the Shun a slight edge in ease of sharpening due to the slightly softer VG-MAX.

Miyabi Kaizen II vs. MAC Professional: MAC Professional uses a proprietary Japanese stainless steel at around 59-60 HRC. The MAC is thinner, lighter, and slightly easier to sharpen. The Kaizen II has better edge retention. MAC has arguably better balance for lighter cooks. Both are excellent, and both are around the same price. MAC is a better choice if you want to sharpen often with whetstones. Kaizen II is better if you want to go longer between sharpening sessions.

Miyabi Kaizen II vs. Global G-2: Global uses CROMOVA 18 steel at 56-58 HRC in their distinctive hollow-handle design. The Global is lighter and has a unique feel. The Kaizen II is noticeably harder, holds its edge longer, and gets sharper on a whetstone. The Global's advantage is its distinctive look and lighter weight.

Miyabi Kaizen II vs. Wusthof Classic: This is the German vs. Japanese comparison. The Wusthof Classic at 58 HRC is more durable, tolerates rougher use, and sharpens more easily on a steel. The Kaizen II is sharper, holds its edge longer, but chips more easily. For cooks who are careful about technique and want maximum sharpness, the Kaizen II. For cooks who are hard on knives or don't want to think about technique, the Wusthof.

For a full view of top-rated knives at this price tier, our Top Kitchen Knives roundup covers the best options.

Caring for a Miyabi Kaizen II

Hand wash only. Never put this knife in the dishwasher. The handle material and the blade both suffer.

Use a wooden or quality plastic board. End-grain wood is ideal. Hard plastic is fine. Avoid glass, ceramic, or stone boards.

Use a ceramic honing rod, not a grooved steel. The harder steel (61 HRC) doesn't respond as well to a traditional grooved steel. A smooth ceramic rod or leather strop aligns the edge without damaging it.

Sharpen on whetstones, not pull-through sharpeners. A pull-through sharpener removes too much metal and creates a rough edge on hard Japanese steel. Use a 1000/3000 or 1000/6000 whetstone combination. The harder steel requires a bit more time on the 1000 grit, but finishes beautifully.

Dry immediately. FC61 is stainless but not fully immune to water spots and minor surface oxidation from prolonged moisture exposure. Dry promptly after washing.

FAQ

Is the Miyabi Kaizen II left-handed friendly? The D-shape handle is designed for right-handed use and is less comfortable for left-handed cooks. Miyabi doesn't offer a left-handed version of the Kaizen II. Left-handed cooks would be better served by a symmetrical handle like the Mac Professional or Global.

What length should I buy for the Kaizen II chef knife? The 8-inch (200mm) is the most versatile for home cooking. The 9.5-inch (240mm) is better for high-volume prep or if you regularly work with large cuts of meat. Most home cooks start with the 8-inch.

How sharp is the Kaizen II out of the box? Very sharp. Miyabi finishes edges using a traditional 3-step Honbazuke sharpening process at the factory. The out-of-box edge is significantly sharper than most production knives and is ready for serious use immediately.

Can I use the Kaizen II for breaking down whole chickens? Yes, for boneless work and cutting through cartilage between joints. Avoid cutting through hard bones directly, as this will chip the hard FC61 steel. For going through bones, use a heavier German knife or a dedicated cleaver.

Wrapping Up

The Miyabi Kaizen II is a genuinely excellent kitchen knife for cooks who are ready for Japanese blade performance. The 61 HRC FC61 steel, the Damascus construction, the D-shape pakkawood handle, and the traditional Japanese geometry come together in a package that outperforms German knives in sharpness and edge retention while staying more approachable than the most extreme high-end Japanese options. If you're ready to upgrade from a German knife and want something that will last for years with proper care, the Kaizen II is one of the best choices in its price range.