Zero-Waste: Food Preservation Basics Everyone Should Know

11/13 Previous Next

© Thinkstock

Warning signs your food has gone bad

While the old adage, "when in doubt, throw it out" is a good rule of thumb to live by when evaluating food for freshness and safe consumption, it's not always easy to tell when food should really be discarded. Here are the warning signs to watch for when it comes to 20 common grocery staples.