What do expiration dates actually mean

What Do Expiration Dates On Food Items Actually Mean?

Do you know that vomit-inducing smell that comes from the expired food items? Well, you do, and you only have to smell it once to make sure it never happens again. Today, many food items come with labels – “Sell By”, “Best By”, or “Use By” date - stamped on the packaging. Those are expiration dates. But what do they actually mean?