Wooden items used for serving or preparing food should be washed under running water. They should never be immersed in water or washed in a dishwasher, as soaking may cause the wood to warp or split. They should be dried immediately with a towel, not left to drain. To maintain the condition of wooden items, a small quantity of edible oil may be rubbed into the wood. Wooden items should be kept away from sources of heat and bright sunlight as these may cause the wood to warp.