Deba literally translates to " pointed carving knife" and can also be called Hon-Deba (True Deba). Japanese specialty knives are made with a specific purpose and will excel at what they are designed for. In this case, the knife is perfect for working on whole fish as each part of the blade has its own function. The sturdier heel of the Deba is used to cut the head and tail of the fish, as well as to be able to cut the small bones. The more delicate tip is used to penetrate the flesh of the fish, in addition to guiding the cook to the spine of the fish. The center of the knife, with its curved shape, allows to cut as close as possible to the spine of the fish to lift the fillets and remove the skin. The Deba can also be used for butchering poultry and small game, although this is not its specialty.
The Yoshikane forge was founded in 1919 in Sanjo/Niigata and is now run by 4th generation Kazuomi Yamamoto-san. He was trained by his uncle Tsuneo Yoshida (3rd generation) and is now established as one of the best blacksmiths in Japan, in addition to being recognized for his skills in blade sharpening. He would rival or surpass the best Sakai sharpeners. This explains why so many talented blacksmiths in Sanjo have been trained at Yoshikane's forge. Yoshikane is famous for its work of Shirogami #2 steel, SKD-11 steel and SLD steel.
Here is a famous quote from Kazuomi Yamamoto-san: "While many things change rapidly these days, there are ideas and beliefs that never change. Every day, I make sure that the meaning of these words is forged in the making of knives".
Shirogami #2 translates to: Shiro (white) and Gami (Steel) and thus; white steel #2. It is named after the color of the package it was wrapped in at Hitachi Metals. The composition of this steel is very pure and contains almost only iron and carbon (1.05%-1.2%). It is in the hands of very experienced blacksmiths that one realizes the enormous potential of Shirogami #2. The quality of the heat treatment and a lower temperature forging are key elements that can allow Shirogami #2 to compete with and even surpass many modern steels. Try a Shiro #2 blade forged by Tanaka-san, Kisuke Manaka-san or Yoshikane Forge and you will see!