White no.1 (Shirogami no.1)

White Steel No.1 (Shirogami no.1) is a highly refined carbon steel made by increasing the carbon content of White Steel No.2 to around 1.25–1.35%.
This gives it higher hardness and edge retention, making it ideal for knives that demand precision and performance.
Popular among professional chefs, it allows for an extremely fine edge, holds sharpness well, and is easy to re-sharpen despite being slightly more brittle.