Vinegar
We just went over this briefly in the previous section, but it is important to note that some foods can preserve themselves. Vinegar is one of those foods. It has an indefinite shelf life. It should get stored in a cool, dark place, never to see direct sunlight.
This only holds for vinegar, whereas other condiments, i.e., vinaigrettes containing herbs, garlic, onion, etc., could necessitate refrigeration. It is always best to read the packaging of the said item before making any assumptions. That is a general rule of thumb and will lead to better food experiences in the end.