1. The moldy appearance of dried beans proves that they become moldy only when the moisture content is high during the drying process. It is recommended not to eat them and throw them away. Dried beans are also called dehydrated beans. Cowpeas and kidney beans are usually used as raw materials. After being cooked at high temperature, they are dried in the sun or oven. After drying, the finished product is black and brittle.

2. Soak the dried beans in warm water for 20 minutes, wash away the impurities inside, boil water in a pot, add one star anise and two bay leaves, put the washed dried beans in and cook.