The Oro collection is made of pure brass and hand wash is recommended to maintain the natural colour, longevity and authentic look of the item. Use in dishwasher is not favoured, as a discolouring effect may occur. Greasy nutrients can possibly leave traces. That is why it is recommended to clean and dry the pieces as soon as possible after each use. First rinse off the item to remove as much debris as possible with water alone. This will prevent the food debris from scratching the metal. Soaking in water should be avoided. As such, please make sure drying is done immediately after the cleaning process.