7 Foods that Never Expire ByStephanie Holmes, 10/13/2021 Gourmandize shares Share on Facebook Share on Twitter Pin it Share on WhatsApp Share on Google+ 3/7 Previous Next © ThinkstockPhotos Cornstarch Cornstarch never goes bad, as long as you keep it in a cool, dry place. It's best stored in its original container with a sealed lid and away from moisture.