Does parmesan cheese go bad?

In this short article, we will provide an answer to the question “does parmesan cheese go bad?”. We will go over the shelf life of parmesan cheese as well as the best ways of storing it.

Does parmesan cheese go bad?

Yes, parmesan cheese goes bad once it has passed its expiration date. When kept in the refrigerator, an open package will often maintain its optimum quality for up to 2 months Although grated Parmesan degrades more quickly, it will be edible for at least a week after the expiry date stated on the label. Open chilled shredded or grated cheese, on the other hand, should be consumed within seven days after opening.

What is the shelf life of parmesan cheese?

Parmesan cheese, like other hard cheeses, has a lengthy shelf life. In the refrigerator, you may keep an unused package for up to 7 to 9 months. Do not be concerned about a “use-by” date on the label, since this product may last for many weeks after that date has passed.

How Long Does Parmesan Cheese Last (Chart)
Parmesan cheese typePantryFridge
Unopened/7 to 9 months
Opened/1 to 2 months
Unopened, refrigerated shredded/grated/7 days
Opened, refrigerated shredded/grated/3 to 7 days
Unopened, unrefrigerated gratedOne month/
Opened, unrefrigerated grated/4 to 6 months

Ways to Tell if Parmesan Cheese Has Been Infected

Hard cheeses, such as Parmesan, the development of mold patches are generally considered safe by cheese experts. Once they have been identified, use a knife to scrape away alterations on the concerned surface and approximately 1 inch (2.5 cm) around the edges of the changes. Keep the knife and the mold apart from one another to avoid contamination of the remainder of the piece after it has been cut.


The parmesan rind is usually darker than the remainder of the block, and so many people, like me, prefer to eat the tougher portion of the block rather than the soft center. Once the color changes to a dark yellow or grey hue, you should avoid eating the cheese at that point.

A light to mild beige hue consistently characterizes the appearance of grated Parmesan cheese. When it becomes yellow or deep beige, you should consider this item to be ruined.


When the Parmesan has turned bad, you will be able to identify a distinct scent that indicates that the cheese isn’t any longer suitable for consumption. It is possible to distinguish between moldy, sour, and pungent odors, depending on the cause of deterioration.


Checking the texture of shredded Parmesan is the most reliable method to determine if it has gotten worse. When the package begins to feel moist and squishy to the feel, it is best to discard the whole contents.


Whenever you discover that your cheese is starting to smell or taste rotten or sour, you must throw it out immediately.

Other FAQs about Parmesan which you may be interested in.

Can you melt parmesan cheese?

How to Keep Parmesan Cheese Fresher for a Longer?

Parmesan has a lengthy shelf life, however, how it is stored has an impact on its quality and lifespan. Let us have a look at your options:


Store Parmesan bits in the refrigerator at a temperature of 39 to 46 degrees Fahrenheit (4 to 8 degrees Celsius). Because it has to be able to breathe, you should wrap it in a way that allows for the following:

A somewhat damp paper towel is used to wrap big cheese pieces, which should weigh at least 2 to 3 pounds (0.9 – 1.4 kg). After that, cover it with an aluminum foil covering.

When you want to preserve the finest taste and texture of the cheese, it is preferable to wrap it tightly in parchment paper. It is highly recommended to place a layer of cling film or tinfoil over the box to prevent it from collecting odors from inside the refrigerator.

Before putting the cheese in the fridge, wrap it in parchment paper or plastic wrap to keep it fresh.

Place the block in a zipper-lock bag, being careful to remove all of the air before placing it in the refrigerator.

Packing the cheese in cling film is an option, but the flavor of the cheese will turn noticeably sour after a few hours.

Whatever technique you select, be sure to change the wrapping every 5 to 7 days if you want to keep the cheese for longer than five to seven days.


It is feasible to store Parmesan inside the freezer to extend the shelf life of the cheese. It may be kept for several months in an airtight box or freezer bag that has been firmly sealed. Always take precautions to ensure that as much extra air is removed as feasible.


In this short article, we provided an answer to the question “does parmesan cheese go bad?”. We also discussed the shelf life of parmesan cheese as well as the best ways of storing it.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.