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The Daily Insight

How do you store grated Parmesan cheese?

Author

Robert Guerrero

Updated on March 24, 2026

The exact answer to that question depends to a large extent on storage conditions - keep shredded Parmesan cheese refrigerated at all times. To maximize the shelf life of shredded Parmesan cheese after opening, tightly seal original packaging or place the cheese in resealable plastic bags or airtight containers.

Also question is, how do you keep grated Parmesan cheese fresh?

Sharp in flavor with a granular texture, this cheese is primarily used for grating. To keep Parmesan fresh, proper storage is necessary: It should be wrapped tightly in plastic wrap and kept in the refrigerator.

Subsequently, question is, do you have to refrigerate grated Parmesan cheese? Soft cheeses such as cream cheese, cottage cheese, shredded cheeses, and goat cheese must be refrigerated for safety. As a general rule, hard cheeses such as cheddar, processed cheeses (American), and both block and grated Parmesan do not require refrigeration for safety, but they will last longer if kept refrigerated.

In this manner, how long can you keep grated Parmesan cheese in the fridge?

How Long Does Parmesan Cheese Last

Fridge
Parmesan (unopened) 7 – 9 months or Use-by + 1 month
Parmesan (opened) 4 – 6 weeks
Shredded/grated parmesan (sold refrigerated, unopened) Use-by + 7 days
Shredded/grated parmesan (sold refrigerated, opened) 3 – 7 days

Does grated Parmesan cheese go bad?

Grated Parmesan cheese that was sold unrefrigerated will generally stay at best quality for about 10 to 12 months in the refrigerator after it has been opened. Properly stored, grated Parmesan cheese will maintain best quality for about 18 months in the freezer, but will remain safe beyond that time.

Related Question Answers

Is mold in grated Parmesan cheese OK?

Mold generally can't penetrate far into hard and semisoft cheeses, such as cheddar, colby, Parmesan and Swiss. So you can cut away the moldy part and eat the rest of the cheese. Some types of mold are used to make cheeses, such as Brie and Camembert. These molds are safe for healthy adults to eat.

What is the best way to store Parmesan cheese?

To keep Parmesan fresh, proper storage is necessary: It should be wrapped tightly in plastic wrap and kept in the refrigerator. Cheese that has been exposed to air may start to turn white, or the rind may start to thicken.

How can you tell if grated Parmesan cheese is bad?

How can you tell if grated Parmesan cheese is bad or spoiled? The best way is to smell and look at the cheese: if cheese develops an off odor, flavor or appearance, it should be discarded; if mold appears, discard all of the grated Parmesan cheese.

Can I freeze freshly grated Parmesan cheese?

Yes- for best results, grate the Parmesan cheese before freezing and place the grated cheese inside an airtight container or a heavy-duty freezer bag. Frozen cheese may become crumbly and lose some of its flavor; the thawed Parmesan cheese will be best suited to cooked dishes, such as sauces, soups and casseroles.

What happens if you eat bad Parmesan cheese?

As long as it was stored properly and did not have any visible or taste of mold, probably okay. Many products such as packaged grated parmesan may already have a mold inhibitor or preservative in it. So expired, it probably is ok. Its your tummy, if you are sensitive then don't eat it.

Does Parmesan cheese go bad in the fridge?

Grated Parmesan cheese that was sold unrefrigerated will generally stay at best quality for about 10 to 12 months in the refrigerator after it has been opened. Properly stored, grated Parmesan cheese will maintain best quality for about 18 months in the freezer, but will remain safe beyond that time.

Why does parmesan cheese smell like vomit?

That distinctive pukey smell you allude to is the whiff of butyric acid, a short-chain fatty acid naturally ocurring in plant and animal fats. It's found in vomit, and it's found in parmesan cheese (it's found elsewhere, too, but let's not digress). Real parmesan, Parmigiano Reggiano, isn't very high in butyric acid.

How long does opened grated Parmesan last?

about 5 to 7 days

How long does a wheel of Parmesan last?

Some wheels are best enjoyed young, between 12 and 18 months. The rinds of these so-called Mezzano (medium aged) wheels are grooved with horizontal rings that allow the Parmigiano Reggiano pin dots to show through. Most wheels, however, are aged for a total of 18 to 36 months—24 months, on average.

What does bad Parmesan cheese smell like?

Cheap cheese. The pungent aroma is from butyric acid, a naturally occurring fatty acid. It's fairly volatile, which is why you can smell it, and vaporizes off during the aging process. Fully aged Parmesan (1 - 2 years) is sharp, crisp, and a little salty but has nearly no aroma.

What happens if you don't Refrigerate grated Parmesan cheese?

Yes, grated Parmesan cheese, whether grated yourself or the pre-grated, store bought products, will degrade more quickly in several ways if left at room temperature rather than stored in the fridge.

How long will grated Parmesan cheese last in the fridge?

about 10 to 12 months

Do you have to refrigerate Kraft Parmesan cheese after opening?

Q: How should my Kraft 100% Parmesan Grated Cheese be stored once it has been opened? A: It is NOT necessary to refrigerate opened product, however, refrigeration will help to ensure the best flavor and quality of the product.

How long does grated Parmesan cheese last?

about 10 to 12 months

Does grated Parmesan cheese spoil?

Usually, when cheese goes bad, it is easy to see the mold spots. With hard cheeses like Parmesan, the mold spots can be removed, and you can eat the rest. When grated, Parmesan is white to beige in color. If you are wondering if your grated cheese has spoiled, open the container and check the color and smell.

Is Kraft Parmesan Cheese real?

I found my own answer, but it's interesting: Kraft parmesan is real parmesan, because in the US, the word "parmesan" doesn't mean anything! Since 2008 in the European Union, the word "Parmesan" is defined by law to be only genuine Parmigiano-Reggiano made according to Italian D.O.C.

How long does grated Parmesan cheese last after expiration?

about 10 to 12 months

How do you keep grated Parmesan cheese from molding?

To maximize the shelf life of shredded Parmesan cheese after opening, tightly seal original packaging or place the cheese in resealable plastic bags or airtight containers.

How long does fresh grated Parmesan cheese last in the fridge?

about 5 to 7 days

How do you know if grated Parmesan cheese is bad?

When grated, Parmesan is white to beige in color. If you are wondering if your grated cheese has spoiled, open the container and check the color and smell. Parmesan going bad will smell funny, and the color will look different.

How long is grated cheese good for in the fridge?

about 5 to 7 days