Since the process is soaking dried black mushrooms to get its flavorful liquid. I typically stored in the refrigerator for about 3 to 5 days once it has been boiled and prepared.( I do this if I want to make the rice again later that week or the next week ) use the amount of liquid that I’m using to make my dish and store the rest an airtight container to maintain its flavor and prevent any contamination. However , it can also be stored in the freezer for longer-term storage. You will store it as perviously mentioned It can typically last for several months in the freezer without losing its flavor. When ready to use thaw it in the refrigerator overnight or place the container in cold water until thawed.