Boiled silver ear soup is rich in nutrients, but it tends to deteriorate at room temperature. In order to prolong its freshness, you can store the boiled silver-ear soup in the refrigerator for cold storage. Simmered fungus soup can be kept in the refrigerator for about 2 to 3 days. The low temperature in the refrigerator inhibits the growth and reproduction of bacteria and other microorganisms, which helps to maintain the freshness and quality of the soup.