How To Tell If Shredded Cheese Is Bad? Answered

Last Updated on July 18, 2024 by Shari Mason

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Shredded cheese is a delicious and adaptable ingredient that can be incorporated into a wide range of dishes. Whether you’re making pizza, tacos, or a cheesy casserole, shredded cheese is a staple that can often be found in people’s pantries.

Knowing how to tell if shredded cheese is bad is crucial in preventing the consumption of spoiled cheese, but how to tell if shredded cheese is bad?

In our recent experiment, we closely examined telltale signs in shredded cheese to provide foolproof ways to determine if your cheese has gone bad or is still suitable for your culinary creations.

How To Tell If Shredded Cheese Has Gone Bad

Look for mold growth on the surface of the shredded cheese, because it is a clear sign that it has gone bad.

Surface mold is a definitive indicator of spoiled shredded cheese, and regardless of whether you remove the affected portions, it is best to discard the spoiled cheese. 

Similarly, any unusual discoloration, like yellowish or greenish patches, could signify spoilage of shredded hard cheese. 

If the shredded cheese smell funny, it indicates that it’s past its prime. Bad shredded cheese smells like feet, and sour milk should be discarded. 

“Age is something that doesn’t matter unless you are a cheese.”

– Luis Bunuel, Spanish Filmmaker 

In addition, a slimy or grainy texture might also raise a red flag, typically caused by excessive moisture or improper storage conditions. 

Keeping the cheese tightly wrapped will keep the cheese taste the same. The same thing applies to blue cheese, cheddar cheese, fresh cheese, semi-soft cheese, aged cheese, and sliced cheese.

Read: Best Cheese For Fajitas

Can You Still Use It Despite Mold Growth?

It is not recommended to use shredded cheese with mold growth, even if you remove the visible moldy parts. Mold can produce mycotoxins [1], which can harm human health if consumed in large amounts. 

You should not eat moldy cheese even if you discard the molded parts. Do not eat spoiled cheese or moldy cheese to prevent food poisoning.

Vacuum-packed cheese is not prone to molds, but you should check the expiration date first. The cheese spoils easily when they are exposed to moisture and air.

Read: 

• How To Tell If Queso Fresco Is Bad?
• How To Tell When Kimchi Is Bad?
• Ways To Make Cottage Cheese Taste Better
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• How To Tell If Butternut Squash Is Bad?

Can You Freeze Shredded Cheese To Extend Its Shelf Life?

Yes, you can freeze shredded cheese to extend its shelf life. Freezing shredded cheese can help prevent mold growth and keep it fresh longer. 

To freeze shredded cheese, place it in an airtight container or freezer bag and remove as much air as possible before sealing. Frozen shredded cheese can last for up to 6 months in the freezer. 

However, it’s important to note that freezing can affect the texture of the cheese. Once the cheese is thawed, it may become crumbly or lose some flavor. 

For this reason, frozen shredded cheese [2] is best used in cooked dishes, such as casseroles, pizzas, and soups, rather than as a topping or for snacking. 

When using frozen shredded cheese, it’s important to thaw it in the refrigerator to avoid any potential food safety issues.

Vacuum-sealed cheeses have longer shelf life than opened pre-shredded cheeses.

If you store shredded cheese in the freezer and the dairy product smells sour (smells like spoiled milk or rotten milk) and has freezer burn, discard it.

Read: How Long Does Swiss Cheese Last In The Fridge?

How Long Can It Last In The Fridge?

Generally, unopened shredded cheese can last for up to 2 weeks in the refrigerator, while opened shredded cheese may last for up to a week.

The shelf life of shredded cheese in the refrigerator depends on various factors, such as the type of cheese, its moisture content, and how it is stored.

Read: How Long Does Kraft American Cheese Last?

However, if the cheese has been stored in an airtight container or vacuum-sealed, it may last up to 3 to 4 weeks. 

Harder cheeses, such as cheddar and parmesan, tend to last longer than softer cheeses, such as mozzarella or feta. 

“Spoiled pre-shredded cheese stinks – trust your senses, savor the freshness.”

–Eat Pallet Restaurant & Food Advice

To extend the shelf life of shredded cheese in the fridge, it’s essential to store it properly in an airtight container or sealed plastic bag and place it in the coldest part of the fridge, typically the bottom shelf.

Read: How Long Is Sliced Deli Cheese Good For?

Tips On How To Store Shredded Cheese

• Please keep shredded cheddar cheese in an airtight container or sealed plastic bag to prevent moisture and air from getting in.
• Place the container or bag of the shredded cheddar cheese in the coldest part of the fridge, typically the bottom shelf.
• Use the grated cheese within a week of opening the package to ensure freshness.
• If you have leftover shredded cheese, consider freezing it in an airtight container or freezer bag to extend its shelf life.
• Label the container or bag of the grated cheese with the date you opened the package or froze the cheese so you can track how long it has been stored.
• Avoid storing shredded cheese near foods with strong odors, such as onions or garlic, as the cheese can absorb these odors and affect its flavor.

Read: How To Tell If Just Egg Is Bad?

FAQs

Final Thoughts

If you notice any signs of mold, unusual color or texture, or a sour or unpleasant odor, it is best to discard the cheese to avoid the risk of food poisoning because the cheese has gone bad. 

Store cheese in an airtight container. Also, eating bad cheese is a bad idea because, like spoiled food, rotten cheese can harm your health.

Following proper storage guidelines and being mindful of the cheese’s expiration date can help extend its shelf life and reduce the risk of spoilage.

References:

1. https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/mycotoxin
2. https://www.medicalnewstoday.com/articles/299147