This is a lovely Black Walnut tray that displays the Claro Walnut light color figure. It was felled in 2004 from a farm tree in Orland, California. Walnut oil finish was used to help protect the wood's character. Clean with warm water, mild detergent, and dry it immediately. It can be re-oiled with walnut oil (found in grocery stores) or mineral oil. Do not use vegetable oils as they turn rancid in time.