Does Parmigiano Reggiano cheese go bad?

In this brief article, we are going to answer the question “Does Parmigiano Reggiano cheese go bad?”. We will also discuss how long it will last if it is properly stored in a freezer. In the end, we will discuss the difference between Parmigiano Reggiano cheese and Parmesan cheese.

Yes, Parmigiano Reggiano cheese does go bad. However, if it is properly stored, it will last for 1 year, even if its expiration date passes by.

Wrap a chunk of Parmigiano-Reggiano cheese in plastic wrap or aluminum foil after opening to extend its shelf life; or before refrigerating, wrap the cheese in parchment paper first and then cover with plastic wrap.

Freezing Parmigiano-Reggiano cheese will extend its shelf life tremendously. Wrap the cheese in heavy-duty aluminum foil or plastic freezer wrap, or store it inside a heavy-duty freezer bag.

It is still safe to consume a chunk or block of Parmigiano-Reggiano cheese that has mold on it; simply cut away at least 1 inch around and below the moldy region and re-wrap the cheese in fresh wrap.

However, if mold is found in a package of grated, sliced, or crumbled Parmigiano-Reggiano cheese, the entire item should be thrown.

How long does Parmigiano-Reggiano cheese last in the freezer?

It can last for about 10 to 12 months if properly stored, but it will be safe for much longer.

The freezer time indicated is for the top quality only; Parmigiano-Reggiano cheese that has been stored frozen at 0°F for an extended period will keep indefinitely.

A defrosted piece of Parmigiano-Reggiano cheese can be stored in the refrigerator for 3 to 4 days before using; a chunk of cheese that has been thawed in the microwave or cold water should be used right away.

Frozen cheese may crumble and lose some taste; a thawed lump is best used in cooked foods like sauces, soups, and casseroles.

How to tell if Parmigiano-Reggiano cheese is bad or spoiled? 

When Parmigiano-Reggiano cheese goes bad, it becomes extremely hard, darkens in color, develops a strong odor, and mold may form; see the instructions above for how to deal with mold on a chunk of Parmigiano-Reggiano cheese.

What is the difference between Parmesan Cheese and Parmigiano Reggiano? 

The distinction between these two kinds of cheese is that Parmigiano Reggiano is genuine cheese, whereas Parmesan is a copy of Parmigiano Reggiano.

The difference in the taste of both kinds of cheese is pronounced when tasted side by side, you’ll most definitely notice the difference.

The cheese cannot be named “Parmigiano Reggiano” unless it is made in Italy specifically following a recipe, according to Italian trademark regulations. Parmigiano Reggiano is always made in Italy, although Parmesan cheese can be made anywhere to try to replicate the flavor of “Parmigiano Reggiano,”

If the cheese is called “Parmesan,” it is a replica of “Parmigiano Reggiano” and has a lower quality flavor. 

Parmesan cheese is usually cheaper than Parmigiano Reggiano cheese. Since Parmigiano Reggiano will significantly improve the cuisine on which it is sprinkled. You’ll never want to eat ordinary Parmesan again once you’ve had authentic Parmigiano Reggiano.

Read in detail the difference between the two here.

Why is Parmigiano Reggiano preferred over Parmesan Cheese?

Parmigiano Reggiano has the distinct flavor of a product prepared without adulteration and is easy to digest, extremely nutritional, and lactose-free.

It is ideal for all ages and applications due to its high content of protein, vitamins, calcium, and minerals. It comes in a variety of ages on the market: the 18-month cheese is soft and supple, with herbal, floral, and fruity flavors; it’s great for appetizers and snacks.

Parmigiano-Reggiano acquires a greater scent after 22 months, with a nutty aroma joining the fresh fruit aroma. This spice is best used in foods with a strong taste profile, such as soups and risottos.

A Parmigiano-Reggiano aged for 30 months has a stronger flavor and aroma and may be eaten alone, with fruit jams, honey, or a few drops of authentic Modena balsamic vinegar.

Because all varieties of Parmigiano Reggiano must be aged for at least 12 months, the process takes time. With walnuts or jams and honey, Parmigiano-Reggiano creates a great appetizer.

It’s a terrific ingredient to risotto, a soup or minestrone enhancer, and a great topping for veggies au gratin when grated. It’s used in many sauces and meat mixes when cooking meatballs and meatloaf, and it’s an essential element in recipes like lasagna.

How to keep Parmigiano Reggiano cheese fresh?

When refrigerated at a temperature of 40-45°F, an unopened Parmigiano Reggiano cheese keeps excellently fresh until the date indicated on the packaging. It should be covered with a towel after opening and used within 15-20 days. A knife can be used to remove a little amount of mold from the surface.

Other FAQs about Cheese that you may be interested in.

Can cheese go off in the fridge?

What is cheese salt?

What can I substitute for gruyere cheese in mac and cheese?


In this brief article, we answered the question “Does Parmigiano Reggiano cheese go bad?”. We discussed how long it will last if it is properly stored in a freezer. In the end, we discussed the difference between Parmigiano Reggiano cheese and Parmesan cheese.


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.