When the wood stock steamer mixer is covered with enamel, you need to apply oil to the cast iron, which can almost prevent rusting. At the end of the season, thoroughly clean and rinse the substrate. You can use some dishwashing soap and some vinegar, as any scale can easily fall off. After cleaning and drying. Season the interior and exterior of the wood stock steamer cast iron with some grape seed oil. It is best to use distilled water instead of tap water. Tap water contains too many minerals, which can cause scale.