Kasumi Santoku Knife SetKasumi knives are hand crafted in Seki, Japan, by the Sumikama family, a 27th generation family of knife makers. Kasumi Damascus Knives are made from 32 layers of stainless steel folded around a middle layer which acts as the cutting edge. The middle cutting layer is made of V Gold No. 10 high carbon stainless steel, a material specially developed for the sharpest and strongest knives. Kasumi knives are tempered and sharpened to create the "sharpest