How long is left over jar pasta sauce good for?
Once opened, tomato-based sauces are only good for five days to a week. Don’t wait for the mold to form. In many cases, you won’t see the mold in the sauce after five days, but it actually could be there. Some mold produce toxins that can be harmful, so why take the risk? Mold grows in very wet environments. What promotes the mold is the high moisture content. No amount of cooking will kill the toxins. So, to be safe, you need to throw it away.
