Skip to content

How Long Does Parmesan Last?


Cheese lovers, unite. Have you ever reached for a block of parmesan cheese, only to find it covered in mold? It’s a common struggle among us aficionados. As someone who takes their cheese seriously, I’ve had my fair share of disappointments when it comes to the shelf life of parmesan. But fear not, fellow cheese enthusiasts, because I’ve done some digging and gathered some essential information that will help extend the life of this beloved Italian delicacy.

Here’s the scoop:

  • The shelf life of parmesan can vary depending on its storage method and age.
  • When properly wrapped and stored in the fridge, parmesan can last up to six months.
  • Grated or shredded parmesan has a shorter shelf life due to increased surface area exposure.
  • Freezing parmesan is an option for long-term storage but may alter its texture.
  • Don’t solely rely on expiration dates – use your senses to determine if the cheese is still good.

So, before you toss out that block of parmesan, give this blog post a read and discover how to make it last longer.

How To Store Parmesan Cheese

When it comes to properly storing Parmesan cheese, there are several important steps you can take to maintain its freshness and safety for as long as possible. These methods include keeping it away from other foods, storing it in a cool and dark place, tightly wrapping it after each use, and ensuring the correct temperature is maintained. In this guide, we will break down each of these steps and provide helpful tips for effectively storing Parmesan cheese.

How Long Does Parmesan Last-2

Keep cheese separated from other foods- This prevents the cheese from absorbing unwanted odors and flavors.

– Store in a separate compartment or container in the refrigerator.2Store in a cool and dark location- Avoid direct sunlight or warm surfaces, as heat can cause the cheese to spoil more quickly.

– A pantry or cellar is an ideal storage spot for unopened Parmesan cheese.

– This protects the cheese from bacteria growth and helps to maintain its flavor and texture.
– Use wax paper or aluminum foil instead of plastic wrap.4Maintain the proper temperature- Refrigerate at 40-45℉ (4-7℃) to slow down spoilage.
– Freeze only if the cheese has been previously grated and use within six months.

By following these techniques, you can significantly extend the freshness and safety of your Parmesan cheese. It’s important to note that hard cheeses like Parmesan can last longer than their expiration dates if stored correctly.

However, if you notice any signs of spoilage such as excess moisture or dryness, discoloration, or mold growth, it’s best to discard the cheese.

In addition to proper storage, there are plenty of creative ways to incorporate Parmesan cheese into your meals. From grating it over pasta to making crispy Parmesan chips, this versatile cheese adds a delicious flavor to a variety of dishes. Just be sure to store any leftovers using the methods mentioned above.

Can You Freeze Parmesan?

Yes, it is possible to freeze Parmesan cheese to prolong its shelf life up to 6 months. Freezing is an effective method to save leftover Parmesan cheese and avoid unnecessary waste, especially if you have a sizable block that cannot be consumed before it spoils.

Proper storage is essential for preserving the distinct characteristics of Parmesan cheese when frozen. Grating or slicing the cheese into smaller portions before freezing can also make it easier to use later on.

Fresh Parmesan Cheese 3 to 4 days 6 months (freezer)
Grated Parmesan Cheese 3 days 6 months (freezer)
Shredded Parmesan Cheese 5 to 7 days 6 months (freezer)

To freeze Parmesan cheese, securely wrap it in plastic wrap or aluminum foil to prevent freezer burn and unwanted odors. Then, place it in an airtight freezer bag and label it with the date. Frozen Parmesan cheese may become slightly grainy or less smooth, but it still works well in sauces, soups, and casseroles. However, refreezing thawed Parmesan cheese is not recommended as it can affect its quality and safety.

It is worth noting that the type of Parmesan cheese also plays a role in its storage time. For instance, Parmigiano Reggiano should be stored in a cool, dry place and can last for months without compromising its flavor or texture. On the other hand, grated Parmesan cheese freezes better than a whole block due to its larger surface area.

See also  Do Crystal Light Packets Expire?

When left at room temperature, Parmesan cheese can spoil quickly due to its high moisture content and bacteria growth. Therefore, it is advisable to store it in the fridge or freezer to extend its shelf life.

How Long Does Parmesan Cheese Last

Parmesan cheese has a remarkable lifespan of 7-9 months when ungrated and unopened. Once opened, it can only last for 1-2 months. However, the shelf life of this delightful cheese can vary depending on factors such as storage conditions, type of parmesan cheese, and whether it is grated or not.

Unopened Parmesan Cheese:

Unopened, ungrated parmesan cheese can last for up to 7-9 months in the fridge. The vacuum-sealed packaging helps preserve the cheese’s freshness and prevents mold growth. Nevertheless, do check the expiration date on the packaging before indulging in its deliciousness.

Opened Parmesan Cheese:

Once opened, parmesan cheese should be consumed within 1-2 months. Exposure to air and moisture can cause mold growth and spoilage. The shelf life of grated parmesan cheese is shorter and must be used within 3-5 days after opening.

Different types of Parmesan cheese have varying storage times as well. For instance, aged parmesan with a hard texture can survive longer than softer, fresher varieties.

Signs of Spoilage:

Spoiled parmesan cheese will exhibit changes in color, texture, and smell. It may develop mold or become slimy, and the aroma will be unpleasant. If you detect any of these signs, it is advisable to discard the cheese to prevent foodborne illness.

Proper Storage:

To prolong the shelf life of parmesan cheese, ensure proper storage. Keep it refrigerated at a temperature between 39-46 degrees Fahrenheit. Grated or shredded parmesan should be stored in an airtight container to prevent air exposure, which can cause faster spoilage.

Can You Freeze Parmesan Cheese?

While freezing parmesan cheese is not recommended as it may alter its texture and flavor, grated parmesan can be frozen for up to 18 months if necessary. However, it is best to use it within 3-5 days after thawing to maintain its freshness.

In conclusion, the shelf life of parmesan cheese can vary depending on various factors. With proper storage and usage, it can last for several months.

How To Tell If Parmesan Cheese Has Gone Bad

How Long Does Parmesan Last-4

Unpleasant odor Slimy consistency Dark yellow hue
Texture changes, such as becoming dry or cracked Growth of mold Discoloration on the surface or inside of the cheese
Expiration or use by date on packaging has passed
  • Unpleasant odor: If you detect a sour, rancid, or musty smell coming from your Parmesan cheese, it is likely spoiled and should not be consumed.
  • Changes in texture: Parmesan cheese typically has a firm, grainy texture. If it becomes slimy, dry, or cracked, this can be a sign of spoilage.
  • Changes in color: The color of Parmesan cheese can also indicate spoilage. If you notice a dark yellow hue or any discoloration on the surface or inside of the cheese, it may be bad.
  • Mold growth: If you see any mold growth on the surface or inside your Parmesan cheese, it is best to discard it as it has likely gone bad.
  • Expiration or use by date: Many manufacturers provide an expiration or use by date on their prepackaged Parmesan cheese. If this date has passed, it is best to avoid consuming the cheese.

It’s worth noting that some types of mold on hard cheeses like Parmesan may not necessarily make the cheese unsafe to eat. However, it is always better to err on the side of caution and discard any cheese with visible mold growth.

If you observe any changes in smell, texture, color, or notice mold growth on your Parmesan cheese, it is best to dispose of it and not consume it.

How Long Does Cheese Last in The Fridge?

This can differ based on the form and method of storage. To ensure your parmesan cheese stays fresh and lasts longer, it’s important to keep it in the fridge at the correct temperature and use appropriate packaging materials. Furthermore, it’s crucial to be aware of any signs of spoilage and properly handle and store any leftover cheese.

When it comes to proper storage, make sure to place your parmesan cheese in the fridge’s vegetable drawer (UM, CU). While it’s okay to leave it on the counter if you plan on using it within a day or two, keeping it in the fridge is the best option. Also, ensure that your cheese is not exposed to sunlight or any sources of heat, such as the stove, as this can shorten its shelf life.

But how can we tell if our parmesan cheese has gone bad? Well, look out for any changes in color or texture, such as mold growth or a slimy surface. If you notice any of these signs, it’s best to discard the cheese immediately.

Moreover, handling and storing leftover cheese properly is also key to extending its shelf life. Make sure to wrap it tightly in plastic wrap or foil before placing it back in the fridge. And remember, never store leftover cheese in its original packaging as it may not provide proper protection from bacteria.

See also  How Long Is Lemon Curd Good For?

Rotten Records: Share Your Snap.

It’s important to first understand the shelf life of parmesan cheese. An ungrated block can last for 7-9 months while still in its package, but once opened, it should be consumed within 1-2 months for best quality. Grated parmesan, on the other hand, has a shorter shelf life and should be used by the “best-by” date on the packaging or within 3-5 days after opening. If you opt for canned grated parmesan, you can enjoy a longer shelf life thanks to dehydration eliminating bacteria growth.

In the unfortunate event that you find yourself with a block of parmesan that has gone bad, don’t panic. Mold spots may appear, but fear not – they can simply be cut off and the rest of the cheese is safe to consume immediately. However, once opened, the cheese should not be stored again as it has already begun to spoil.

To properly store blocks of parmesan, keep them in the refrigerator at around 39-46 degrees Fahrenheit. Once opened, you can wrap the block in aluminum foil and store it at the same temperature. For grated or shredded parmesan, proper storage also means keeping it in the fridge – either in its original packaging or an airtight container.

If you want to extend the shelf life of your parmesan, you can also freeze it. However, it’s important to keep in mind that this may affect its texture and flavor. To minimize any potential thawing issues, it’s recommended to grate the cheese before freezing it. This can extend its shelf life from 12 to 18 months. To further ensure freshness, store grated or shredded parmesan in an airtight bag or container before placing it in the freezer.

So, the key to maintaining the quality and extending the shelf life of parmesan cheese lies in proper storage.

How Long Does Parmesan Cheese Last

Parmesan cheese is an extremely versatile and delicious addition to any meal. However, it’s essential to store it correctly to ensure its maximum shelf life. To help you out, here are some expert tips on how to store parmesan cheese:

Keep it in its original packaging or transfer it to an airtight container: The best way to maintain the freshness of parmesan cheese is by either keeping it in its original packaging or transferring it to an airtight container. This helps prevent moisture and other contaminants from getting into the cheese.

  • Store in a cool, dark place: It is vital to keep parmesan cheese in a cool, dark place, far away from direct sunlight or heat sources. An ideal spot for storage would be a pantry or cupboard.
  • Avoid strong odors: Parmesan cheese easily absorbs strong odors, which can affect its flavor. To preserve its rich taste, make sure to store it away from pungent foods like onions, garlic, and other strongly scented ingredients.
  • Use grated parmesan for sprinkling: Grated parmesan is perfect for sprinkling on dishes like pasta, salads, and soups. This form of parmesan has a higher fat content and lower moisture levels, making it less susceptible to spoiling.
  • Use sliced parmesan for sandwiches and pizzas: Sliced parmesan adds a nutty and rich flavor to sandwiches and pizzas. It has a lower fat content but higher moisture levels, so consume it within the recommended shelf life.
  • Check for gluten: If you have celiac disease or gluten intolerance, always check if the parmesan contains wheat flour before consuming it. Some manufacturers use wheat flour as an anti-caking agent, so read the labels carefully.
Fridge Freezer
Grated Parmesan Cheese 3 to 4 weeks 8 months
Sliced Parmesan Cheese 3 to 4 weeks 8 months

By following these storage tips, you can ensure that your parmesan cheese stays fresh and delicious for its maximum shelf life. Always check the expiration date and discard any cheese that has mold or an unpleasant odor.

How To Tell If Parmesan Cheese Has Gone Bad

There are a few essential indicators that can assist you in identifying if parmesan cheese has spoiled and is no longer safe to consume. These include:


The most obvious indication that parmesan cheese has gone bad is a strong, unpleasant scent. If the cheese smells sour, rancid, or moldy, it is most likely unsafe to eat.


Another method to determine if parmesan cheese has spoiled is by examining its texture. If the cheese feels slimy, dry, or cracked, it may have gone bad.


Fresh parmesan cheese should have a pale yellow hue. If you notice any dark yellow or discolored spots on the cheese, it could be a sign of spoilage.

Mold or discoloration

Inspect the surface and interior of the cheese for any visible signs of mold or discoloration. If you see any, it is best to dispose of the cheese.

Expiration date

Many prepackaged parmesan cheeses come with an expiration or use-by date. If the date has passed, it is safest to discard the cheese.

See also  Does Margarita Mix Go Bad?

In addition to these signs, proper storage is crucial in preventing spoilage of parmesan cheese. Keep it in the refrigerator at 40-45℉ and avoid using plastic wrap as this can trap moisture and promote mold growth. Instead, opt for wax paper or aluminum foil to wrap the cheese.

If stored appropriately, refrigerated parmesan cheese can last up to six weeks, and frozen parmesan can last up to six months. Incorporating parmesan cheese into recipes like pasta or soup is an excellent way to use it up before it spoils. You can also make delicious Parmesan crisps by baking scoops of shredded Parmesan in the oven at 375℉ for eight minutes.

How Long Does Cheese Last in The Fridge?

When stored properly, parmesan cheese can last for up to a year in the fridge if unopened, and 4-6 weeks if opened. However, grated cheese has a shorter shelf life of just a few weeks to a month. So, how can you ensure that your parmesan cheese stays fresh and tasty for as long as possible?

Proper Storage Techniques:

The key to prolonging the shelf life of parmesan cheese is proper storage. To start, make sure to store your cheese in the refrigerator at a temperature between 35-40°F (1-4°C). This will prevent moisture from forming and keep the cheese from spoiling quickly.

Next, wrap the cheese tightly in breathable paper or plastic before placing it in the fridge. It’s also important to store it separately from other foods to avoid cross-contamination. This will help maintain its quality and prevent any unwanted odors from transferring.

Signs of Spoilage:

Before consuming parmesan cheese, always check for signs of spoilage. These may include mold growth, an off-color or slimy texture, and an unpleasant odor. If you notice any of these signs, do not consume the cheese as it may cause foodborne illness.

Freezing Parmesan Cheese:

If you have a surplus of parmesan cheese or need to extend its shelf life even further, it can also be frozen. However, freezing may cause some loss of flavor and texture. To freeze parmesan cheese, wrap it tightly in plastic wrap or place it in an airtight container before placing it in the freezer.

When ready to use, thaw the cheese in the refrigerator overnight before incorporating it into your favorite recipes.

Rotten Records: Share Your Snap.

By sharing a photo of decaying Parmesan, you can effectively demonstrate the potential consequences of mishandling and improper storage. This is a compelling way to educate others about the significance of adhering to food safety practices and the potential dangers of consuming spoiled food.

The Significance of Proper Storage:

Parmesan cheese is a hard, aged cheese commonly used in cooking and as a topping for dishes like pasta and pizza. To ensure its freshness and safety, it is crucial to store it properly. This includes keeping it refrigerated at a temperature between 35-40°F, tightly wrapping it to prevent exposure to air, and checking for spoilage before consuming.

Indicators of Spoilage in Parmesan Cheese:

One of the main reasons for sharing a photo of rotten Parmesan is to educate others about the telltale signs of spoilage. While mold on hard cheeses can be trimmed away, if it has a greenish or blue tinge, the cheese should not be consumed. This type of mold can be harmful and should be discarded immediately.

Preventing Mold Growth:

Grated Parmesan is more susceptible to mold growth due to its increased surface area. To prevent this, it is important to keep the cheese dry and use absorbent materials like salt or rice when storing it. These materials will soak up any excess moisture and help prevent mold from forming.

Freezing as an Alternative:

If you have a large quantity of Parmesan and are worried about it spoiling before you can use it all, freezing can be an option. However, it is important to note that freezing may alter the taste and texture of the cheese. It is best to use frozen Parmesan in cooked dishes rather than consuming it on its own.

Refrigerator Freezer
Fresh Parmesan (whole) 3-4 months 6-8 months
Fresh Parmesan (grated) 1-2 months 6-8 months
Cooked Parmesan (whole or grated) 1-2 weeks 6-8 months

Sharing a photo of a decaying piece of Parmesan can serve as a compelling visual aid in educating others about its shelf life and safety.


In summary, the key to preserving the freshness of parmesan cheese lies in proper storage techniques.

By implementing these tips, you can guarantee that your cherished block of parmesan will remain delectable for an extended period of time. Don’t let a moldy piece of cheese spoil your next meal – take the necessary precautions to store and preserve it effectively.

Your taste buds will surely appreciate it.