Can I Eat Expired Parmesan Cheese?

Safe up to 60 days after expirationLast updated: 3/30/2025

Safe to eat up to 60 days after expiry

Low Risk❄️ Can be frozen

Expert Source

"According to USDA guidelines, Parmesan cheese should be stored in the refrigerator at 40°F or below and used within 2 to 4 months for best quality."

Fresh Parmesan Cheese

Fresh Parmesan Cheese

⚠️Spoiled Parmesan Cheese

Spoiled Parmesan Cheese
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Storage Guidelines

Storage Location

Fridge

Ideal Temperature

4°C (40°F)

Best Storage Method

Wrap in wax paper and store in fridge drawer

Shelf Life

Average Shelf Life

365 days

Extended Shelf Life (When Frozen)

730 days

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Signs of Spoilage

Hard texture, mold (can be cut off), ammonia smell

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Additional Information

Alternative Uses

Grate and freeze for later use

Possible Substitutions

Asiago, Romano cheese

Frequently Asked Questions

What's the difference between expiration and best quality dates for Parmesan Cheese?

The expiration date on Parmesan cheese indicates the date up to which the cheese is expected to remain at its peak quality. After this date, the flavor and texture may deteriorate, but it does not necessarily mean the cheese is unsafe to eat. Best quality refers to the period during which the cheese is expected to taste its best, but it can still be consumed after this date if properly stored and shows no signs of spoilage. As a hard cheese, Parmesan can last beyond its expiration date if stored correctly.

How can I tell if Parmesan Cheese has gone bad?

To check if Parmesan Cheese has gone bad, look for any mold growth on the surface or a darkening in color. Smell the cheese for any sour or unpleasant odors. Lastly, feel the texture - if it feels slimy or sticky, it's best to discard it.

What are the food safety risks with Parmesan Cheese?

Parmesan cheese is a low moisture cheese with low water activity, which inhibits the growth of harmful bacteria. However, there is still a risk of contamination if not stored properly. To reduce the risk of foodborne illness, always store Parmesan cheese in the refrigerator at temperatures below 40°F (4°C). Avoid keeping it at room temperature for extended periods as this can promote bacterial growth. Additionally, make sure to handle Parmesan cheese with clean hands and utensils to prevent cross-contamination.

What are some pro tips for storing Parmesan Cheese?

To maintain the quality of Parmesan cheese, it is best to store it in airtight packaging or a resealable plastic bag to prevent moisture loss and absorption of other odors. You can also wrap it in parchment paper followed by aluminum foil for additional protection. If the cheese develops mold on the surface, you can cut off the affected part and continue using the rest. For optimal flavor, consider grating Parmesan cheese fresh as needed rather than pre-grating it and storing it for an extended period.

Any interesting facts about Parmesan Cheese?

Parmesan cheese, also known as Parmigiano-Reggiano, is a famous Italian cheese that has been produced for over 900 years. It is traditionally made from unpasteurized cow's milk and aged for a minimum of 12 months, with some varieties aged for up to 36 months or more. True Parmigiano-Reggiano can only be produced in certain regions of Italy and must adhere to strict production standards. It is a staple in Italian cuisine, used in dishes like pasta, risotto, and salads.

Expiration Calculator

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Sources

For more information on food safety and expiration guidelines, visit our Sources page.

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Recipes Available

We have recipes that can help you safely use parmesan cheese past its expiration date!

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Reviewed By: Food Safety & Expiration Experts

At Can I Eat Expired, we are committed to providing accurate, science-backed information about food expiration and storage safety. Our content is carefully reviewed based on guidelines from leading food safety organizations, including:

🔍 How We Ensure Accuracy

  • We use official food safety sources to guide our recommendations.
  • Our team continuously reviews and updates content based on the latest research.
  • We encourage users to always check for signs of spoilage and follow proper storage guidelines.

📚 Have Questions?

If you have specific concerns about food expiration or safety, we recommend consulting a registered dietitian, food scientist, or your local health department.

Note: These are general guidelines. Always use your best judgment and when in doubt, throw it out.