How do I know if Cheese is bad?
In general, the harder the cheese the longer it keeps. Of course, it lasts for a shorter period of time if it is not stored properly. But remember, cheese, like a lot of other dairy products, usually has a sell by date or a best by date which is simply the last date by which a manufacturer will vouch for a product’s quality, not its safety. Because of this distinction, you may safely use cheese to compliment your favorite meals even after its best by date has lapsed.