Yosukata woks have already been pre-seasoned but still need to be seasoned. Our wok was treated at a high temperature at production, leaving the color naturally uneven. Despite this initial pre-seasoning, it still needs to be fully seasoned with vegetable oil or lard.
If you buy a wok that has not been pre-seasoned, you will need to heat it to a very high temperature without oil until the color changes to blue. Only after pre-seasoning can you season it with oil. If you wash a fully seasoned wok with dish soap, the patina will be destroyed, and the wok should be seasoned again.