Product Description This product is a compact and practical iron supplement tool, designed to be boiled in a pot or kettle to release easily absorbable iron into your food or drink. It is perfect for improving health and can be added to a variety of dishes such as tea, miso soup, nabe (one-pot dish), simmered dishes, and more. It can also be used to add color to pickles and add luster to black beans. Please note that as this product is made of cast iron, rust may occur after use. If rust appears, it can be easily cleaned off and the product can be reused. After use, it is recommended to dry it completely and store it wrapped in kitchen paper and plastic wrap to prevent exposure to the outside air. Product Specification Size: 2.9 x 4 x 5 cm Weight: 150 g Material: Iron Country of Origin: Japan Usage Boil it in a pot or kettle to replenish iron. The iron leached from this product is easily absorbed into the body, making it perfect for improving health. Simply add it to tea, miso soup, nabe (one-pot dish), simmered dishes, and other cooking methods to easily replenish iron. It can also be used to add color to pickles and add luster to black beans. Care Instructions Because this product is made of cast iron, rust will occur after use. If rust appears, please wash it well and scrub off the rust with a cloth or gold scrubber before use (any remaining iron rust is not harmful to human health). After use, remove water completely (boiling and removing the pot while it is still hot will allow it to dry quickly due to residual heat.) Wrap it in kitchen paper and store it in plastic wrap to prevent it from being exposed to the outside air.