Does port go bad

Port wine can last for a considerable time if stored properly, but it can eventually go bad. Unopened bottles can last for several years, while opened bottles should be consumed within a few weeks to a few months, depending on the type of port. Signs of spoilage include off odors, a change in color, or a noticeable change in taste. To maximize its shelf life, store port in a cool, dark place and keep it sealed tightly after opening.