If sauce gets on the bottom of the bowl, should it be washed immediately?

The degree to which seasoning marks remain can differ between surfaces with and without a glaze layer. Maruhiro dishes do not have glaze applied to the bottom surface and foot rim, so color transfer can occur if seasoning comes into contact with them^[2]. Generally, unglazed ceramic surfaces can retain traces of absorbed pigments or oils, so it is better not to leave thick seasonings in contact for a long time. Washing immediately with a soft tool, removing moisture, and drying thoroughly helps reduce the risk of staining. If discoloration has already occurred, rather than scrubbing vigorously or arbitrarily bleaching it, please check the appropriate cleaning method for the product first.