2. You can soak a proper amount of tremella for about half an hour. You can change the water once it is half cold. After half an hour, the petals of tremella become bigger after soaking, and the impurities inside can be washed clean.

3. A lot of dust and dirt will be left in the dried tremella. If you cook directly with hot water without soaking in advance, it will not only take a long time to cook, but also make the soup and tremella contain dust and other substances, which makes it uncomfortable to eat, and you may even eat sand if you are not careful. Therefore, eating dried tremella will be soaked in advance to remove impurities on the surface of tremella and reduce the time for cooking tremella, which is also the key to making tremella soup thick and soft.