The pressure cooker has been used for a long time, and there is a layer of ash in it, which can still be used. By the end of June, 5438 +20231October 2, according to the relevant public information, the ash at the bottom of the pot was caused by the failure to clean the returned soup in time when the vegetable juice overflowed or poured out. When washing the pot, you often only wash the inside of the pot, ignoring the cleaning outside the pot. As a result, a thick bottom ash was formed at the bottom of the pot after a long time. When washing the pot at ordinary times, the inside and outside of the pot should be cleaned.