Allow the soup to cool: Before storing, let the soup cool down to room temperature. This helps prevent the growth of bacteria and avoids raising the temperature inside the refrigerator. Transfer to an airtight container: Pour the cooled soup into an airtight container or multiple containers if you prefer portioning. Refrigerate or freeze: Place the container(s) in the refrigerator if you plan to consume the leftovers within 3-4 days. For longer storage, you can freeze the soup for up to 3 months. When freezing, make sure to leave some space at the top of the container to allow for expansion as the soup freezes.