Skip to Content

How Long Is Parmesan Cheese Good For

How Long Is Parmesan Cheese Good For

For How Will Parmesan Cheese Be Good In The Refridgerator

When parmesan cheese is spoiled, it turns yellowish-brown and gets moldy. So, an unopened block of parmesan cheese will last for 7 to 9 months in the fridge. Whereas an opened block of parmesan cheese will last for 2 months. But if you have grated parmesan cheese, it will not last more than a week.

How long does Parmigiano Reggiano last? grated (sold unrefrigerated, unopened). Stored properly, an opened package of grated Parmesan cheese will keep in the refrigerator for about 5-7 days.

Grated or shredded cheese can last 7-10 days after opening if stored in an airtight container. Freezing shredded and shredded cheese in an airtight container or freezer bag will extend shelf life. To keep cheese open at optimum quality for a longer period of time, consider freezing it.

Cheese that is opened and sold without refrigeration typically retains its best quality at room temperature for about 12-18 months. Cheese can stay fresh for up to six months if stored carefully (although you may experience the greatest flavor if frozen and eaten within two months). A block of hard cheese will keep fresh for up to 9 months unopened and up to 6 weeks if opened in the refrigerator.

If it is sold refrigerated and the package is not opened, it will be edible within a week after the expiration date. If fresh cheese is still not opened in its original packaging, it can keep for 3-4 weeks at room temperature, but it can keep for about 6 months in the refrigerator. If you store Parmigiano Reggiano properly, it can keep for several months past its expiration date, perhaps even a year.

Watch to know the health benefits of Parmesan cheese.

Since Parmesan is a shelf-stable cheese, it should be stored for a few more weeks after this date. If the Parmesan has been freshly grated and has been refrigerated for less than six weeks, you can probably consume it. Typically, Parmesan will keep for about 6 weeks after opening if the cheese has been refrigerated. Remember that Parmesan is at its best 4-6 weeks after opening if properly stored, but it takes longer to eat.

Since Parmesan is a hard cheese, it, like other “mates”, is very rich. Parmesan is a hard cheese that has a fairly long shelf life and can stay edible for a long time if stored properly. Parmesan cheese has a unique taste and smell that complements pasta, pizza, and other savory dishes.

TypesRefrigeratorFreezerAirtight Container
Parmesan cheese7-9 months9 months1-2 months
Shredded parmesan cheese5-7 days6 months5-7 months
Wedged parmesan cheese4-6 weeks1 year4-6 weeks
Shelf life of different types of parmesan cheese in different storage places.

Parmesan can last up to two years if stored tightly enough. Once the seal on the Parmesan package is broken, it can be refrigerated in an airtight container for another month before it spoils. Parmesan is aged for 12 to 36 months before it reaches the store and then to you. Cheese can be frozen for up to two months if you wrap (or seal) it tightly to keep the cheese from burning inside the freezer.

An unopened package of Parmesan cheese can be stored for up to seven months and up to nine months. You do not need to freeze the cheese blocks, because Parmesan can be stored in the refrigerator for a long time.

Since Parmesan comes in fairly large wedges, you might be wondering if the cheese can be frozen. If you want to keep leftovers for as long as possible, you can freeze Parmesan. If you want to extend the shelf life of Parmesan, it is best to freeze it.

To learn about can LSD go bad, check out my other article where I cover things in detail.

As a general rule, there is no particular need to freeze Parmesan because it keeps so long in the refrigerator (several months in most cases) and there will always be a slight loss in quality once something has been frozen. Opened Parmesan keeps its highest quality for about 1-2 months (it can keep up to 6 months if stored properly) when refrigerated at or below 140 degrees Fahrenheit from opening. This is the time when you can enjoy the highest quality and taste of Parmesan, but you can still use expired Parmesan if it has been stored properly.

If refrigerated, grated Parmesan will keep for several weeks past its stated shelf life. You’re much less likely to get sick if the Parmesan isn’t sold refrigerated, so you may still be able to eat expired grated cheese for months on end. Open grated or grated Parmesan cheese sold unrefrigerated will keep for about 4-6 months when stored in an airtight container or resealable plastic bag in the refrigerator at 40 degrees F or colder. For unopened grated or grated Parmesan sold unrefrigerated, it will keep for up to a month even after use, or preferably kept fresh in a cool, dry, dark corner of the pantry, out of direct sunlight and high temperature.

What’s even more surprising is that when your cheese is refrigerated in transit and sold in the supermarket, it can keep for 10-12 months. It is also for this reason that cheese is usually sold under vacuum, as it can be stored for longer than other varieties. Numerous studies have shown that you can eat opened grated cheese for approximately 4-6 months in a refrigerated condition from manufacture and sale in a sealed ziplock bag or vacuum sealer.

To learn about how long does tahini last, check out my other article where I cover things in detail.

Even if the cheese has mold, cut off any dry or wet moldy parts. As long as the cheese does not have a musty taste, the cheese can be eaten if stored properly. As long as there’s nothing rancid in the cheese and it hasn’t really gone bad, it’s safe to eat past its expiration date. Personally, for my peace of mind, I think that hard cheeses like Parmigianino should be stored in the refrigerator as soon as possible, especially when opened. Unfortunately, grated Parmesan doesn’t keep as long as a regular slice or block, so once opened, you may want to consume the cheese within 5-7 days for the best flavor.

How Do you Know if Parmesan Cheese is Bad?

If Parmesan cheese starts developing a very rigid texture and has developed a strong smell it might be a sign that it’s already gotten. More so if you see it darken in color, with molds appearing, then there you are now sure that the Parmesan cheese has gone bad. 

Can You Eat Parmesan With White Spot?

There is no harm in eating parmesan cheese, even if it has a white spot. Typically, these spots appear after the wedges have been cut off the wheel, indicating that the wheel has aged slightly. It is still entirely edible, though.

How Can You Prevent Parmesan From Moulding?

The freshness of Parmesan depends on its storage: That is why you should seal it tightly in plastic and put it in the fridge. The reason behind this is  an exterior layer of cheese that has been uncovered in the air may start to thicken or turn white as it ages