I’ve asked that question a lot of times.  I’m standing there with the fridge door hanging open and wondering if I can still use that jar of salsa because I can’t remember when I opened it.  And right now, you hate to throw anything away, because that’s a waste of money.  It’s better to put everything to it’s best use.  But fresh foods and things that aren’t in containers don’t have a printed expiration date.  That’s where StillTasty comes in. It’s a website that lets you put the type of food or food item in the search box, and then the website lets you know how long it stays good.  Then it’s up to you to figure out when you opened it.  It could save you from paying to buy it over again.