If you have leftover soup or you have made a big batch so that you can divide it into small batches to enjoy as a quick meal on busy weeknights, the best way to store leftovers is in the fridge or freezer. Because there is potato in our soup, we would only recommend keeping the soup in the fridge for up to three days in an airtight container. Let it cool completely (to room temperature), first. You can also freeze your soup for up to three months. Again, allow hot liquids to cool completely before freezing. Add your soup to a freezer bag or freezer-safe container and place in the freezer for next time.