Yamada Kogyosho, Y.K. was founded in Yokohama, Kanagawa, Japan in 1957. They are a family-owned small craft factory run over three generations. They are the only folks making hammered woks in Japan. Their flat-bottom wok is perfect for most folks at home, as they'll work nicely with your glass, electric, or induction stovetop. 

Most people find they like a 27cm or 30cm wok for general wok cooking at home.

Special Instructions for Yamada pans and Woks - Yamada pans and woks come unseasoned and are covered with an anti-rust protective coating. Before first use, make sure to heat the wok to burn off the coating and wash it with detergent when it gets cool. We recommend doing this outside or in a well-ventilated area.

After the seasoning is removed, scrub them well and season them as per a standard carbon steel pan. Instructions are in the attached care letter that comes with the pan or in the "pan care" tab above the description.