To care for your earthenware rice cooker, start by soaking it thoroughly before first use and letting it air dry. Rinse the cooker before each use to prevent rice from sticking. Avoid sudden temperature changes, hand wash with mild dish soap, and dry it completely before storing. Do not use it for deep frying or boiling, and regularly check for cracks or damage. Following these steps will help maintain the quality and extend the lifespan of your rice cooker, ensuring delicious, non-stick rice dishes. Hand wash only.