Some Japanese knives undergo cryogenic treatment to improve the structure of the steel. This process reduces the brittleness of the material and improves edge retention, increasing the life of the knife.
Why it matters in a Japanese knife
This concept helps read a product page with more precision: steel affects edge feel, sharpening response, maintenance and the way a knife ages through regular kitchen use.
What to check before buying
Look at steel type, hardness, blade finish and care notes. A balanced choice is not only technical; it also depends on how you cook and how much maintenance you want to take on.