This walnut serving tray shows a beautiful feather pattern with the yellow highlights so common in California Walnut (sometimes called Claro Walnut). Our family uses trays like this to cut and serve meat. 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.