Before the Teppanyaki is sent out, the top plate gets acid washed using Hychloric Acid which strips away all the oil and grease on the plate to reveal the natural clean steel plate. Sometime by the time it reaches its destination the it starts to rust slightly, however to clean this surface rust off to bring it back to a nice clean surface for cooking on, we suggest giving it another acid wash and immediately after it has been clean, run lots of olive oil into it which will seal it and protect it from the elements