Once opened, hard cheeses like cheddar and Swiss will stay fresh three to four weeks in your fridge, while softer varieties like ricotta, Brie and Bel Paese will hold up for about one to two weeks.

How can you tell if cheese is spoiled?

Cheese: It smells like sour milk.

If you spot mold on a hard cheese, it's generally safe to cut off the moldy part and eat the rest, since the spores likely will not have spread throughout the cheese. Another sign that a cheese has gone bad is a smell or taste of spoiled, sour milk.

Can you eat expired cheese?

Cheese. If you think about how cheese is made and aged, you might be more apt to believe it's the kind of food that doesn't always go bad after its expiration date. Even if there is a little mold growing, consuming "expired" cheese can be safe — as long as you cut off the mold and it still smells alright.