The "hammer" method of collaboration with Yamada Industry in Yokohama City, Kanagawa Prefecture, is the only technology in Japan that makes a frying pan by hitting iron thousands of times. This technology not only tightens the iron and makes it durable, but also has a textured surface that restores oil to the likelihood of the pan that is made with a hammered surface, it is also thin and lightweight, so it is easy to handle for hot spreads, especially popular by professional chefs. Easy to hold and easy to use.