If pistachio nuts are kept in a cool, dry place they will probably last beyond the expiration date. Bad pistachios nuts will go rancid. This means that the oils in the nuts break down. This usually results in a bad odor and taste. If the nuts have not gone rancid and there is no mold, they are safe to eat.
Answers
May 3, 2010
If pistachio nuts are kept in a cool, dry place they will probably last beyond the expiration date. Bad pistachios nuts will go rancid. This means that the oils in the nuts break down. This usually results in a bad odor and taste. If the nuts have not gone rancid and there is no mold, they are safe to eat.