Blue #1 Steel
Blue 1 steel - also called Aogami 1 and Blue Paper 1 - is among the finest carbon steels from the Hitachi Yasugi plant in Shimane Prefecture. Added chromium and tungsten give it better edge retention than White 1 while still taking a very keen edge. It is a reactive steel that will patina with use and rewards cooks who take proper care of their tools with exceptional cutting performance.


