How does white wine spoil and how can you tell if it has spoiled?

White wine is made through a fermentation process of the sugars in grapes becoming alcohol.  https://ivfsurvivalguide.com/?p=852 Over time, that fermentation procedure will continue and the wine will develop into vinegar. That's why an old, unopened bottle of wine will likely be vinegar.

You can inform if white wine has actually spoiled if it has a distinct vinegar odor, if it tastes undesirable, or if it has actually altered color. It's likewise a sign that it's gone bad if it has any mold growing on it.

If you're unsure if your white wine has spoiled, it's much better to err on the side of caution and discard it. Wine that has actually gone bad will not make you sick, but it's not going to taste good either.

To avoid your wine from going bad, make sure to store it correctly. White wine needs to be kept in a cool, dark place where the temperature is relatively constant. There need to not be any significant modifications in temperature or light direct exposure. White wine needs to also be stored upright so that the cork does not dry and let air into the bottle.