6. Vinegar
Vinegar, especially white distilled vinegar, can last forever. Its high acidity acts as a natural preservative, keeping it safe to use for years. You might notice a slight change in color or sediment at the bottom, but that’s normal and doesn’t mean it’s gone bad. Store it tightly sealed, and it’ll stay good indefinitely. Beyond cooking, vinegar is also a natural cleaner, fabric softener, and even a deodorizer. Whether you’re using it in a salad dressing or to clean your countertops, vinegar is incredibly useful—and long-lasting. Apple cider vinegar and balsamic may darken over time, but they’ll still be just fine.