The shelf life of potato soup depends on how it is stored and the specific ingredients used in the recipe. Generally, homemade potato soup can be stored in the refrigerator for about 3 to 4 days. It is essential to properly cool the soup and transfer it to an airtight container before refrigerating. If you have a large batch of potato soup that you won't consume within a few days, you can also freeze it for longer storage. Frozen potato soup can last in the freezer for up to 2 to 3 months. Be sure to use freezer-safe containers or freezer bags to prevent freezer burn and maintain the soup's quality. Always use your best judgment and inspect the soup for any signs of spoilage, such as an off odor, mold, or unusual texture, before consuming it, especially if it has been stored for an extended period. If you have any doubts about the soup's freshness or safety, it's better to discard it and prepare a fresh batch.