How To Tell If Cheese Is Bad

You should first check the expiration dates of any product. It is crucial that you check the expiration dates of food products before you buy them at the supermarket. However, you should not expect a reputable store to sell expired produce.

Cheese can be eaten past its expiration date, unlike many other products (such as chicken). Cheese may still be delicious. It is best to avoid eating it after expiration.

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The appearance of the cheese

Mold can often be a sign that a cheese has gone bad. Many cheeses have mold in their appearance and character. This is true for blue cheeses like Stilton, Roquefort, and gorgonzola. We will also tell the difference between non-blue and blue cheese.

  • Blue cheese: If you want to determine if blue cheese is good or bad, it is important to look at the packaging when you purchase it. Check the mold to make sure it’s the same color you purchased it. The blue veins of a blue cheese can turn gray and dull when they become moldy. If the mold is not fluffy, bad mold can be found on blue cheese.
  • Non-blue cheese. If you see blue mold on cheeses that aren’t supposed have it, it is likely an indication of bad quality. But, white and colored cheeses tend to develop white mold sooner than blue mold, which can make it difficult to identify in the latter.

A little mold can be an issue with both blue and nonblue cheeses. Some sources suggest that you cut out the moldy areas and then eat the rest of your cheese. It takes a while for mold to spread through cheese. This is a risky option, but you can still eat the rest of the cheese. It is difficult to determine if cheese is gone.

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The cheese smells delicious

It can also be hard to determine if a cheese has gone bad by its smell. Cheeses can have strong odors that are supposed to be there. One strong-smelling cheese that comes to mind is the Stinking Bishop. It is crucial to inspect your cheese before you open its packaging. Give the cheese a good sniff to get a sense of how it smells fresh.

You can smell the cheese again if you haven’t opened it in a while. It is possible that the cheese smells differently than before. It is likely that the cheese has lost its original flavor. Cheeses can be very strong but not necessarily putrid.

It is usually easier to identify changes in the smell of cheeses that aren’t supposed to be strong-smelling. Avoid cheeses with strong odors.

Texture of cheese

The texture of cheese can also help you determine if it is still safe to eat. This is the least used method since most cheeses will begin to smell or change in texture before you notice any difference. A soft white cheese such as mozzarella may look the same even if it’s spoiled but it will most likely have a bad smell.

If you are unable to smell any, it might be worth looking at the texture. It is more likely that a hard cheese is off if it becomes softened or has separated. If you leave fresh cheese out for too long, this can happen. Because the fat is leaked out, it may become oily. Fresh mozzarella cheese, for example, should be firm even though it has been packaged in liquid. It is bad if it becomes truncly.

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How to make cheese last for longer

We offer some tips to make sure your cheeses lasts as long as possible.

  • Keep the cheese in the fridge. Cheese of any kind must be kept at room temperature.
  • Keep the cheese in an airtight container. Plastic packaging can make it difficult to seal cheese. Most people simply close the lid and place it in the refrigerator. You can open the door and let the cheese air-dry. This can dry the cheese out and cause it to spoil faster. It should be kept in a sealed container, such as a Tupperware case.
  • Soft cheeses like mozzarella should be kept in their liquid. This will prevent the cheese from drying out.

How to determine if cheese is safe

It’s creamy. It’s decadent. Sometimes it can be a bit too strong. An overpowering smell is not always bad when it comes to your favorite cheese. Many cheeses can be quite strong-smelling but still delicious to eat.

This is how you can tell if your cheese should be left out to pasture or safe.

  1. Take a whiff of it: Katie Cavuto MS, RD, says “When you buy a new cheese especially if it is stinky, talk to the cheese monger to ensure that it smells normal.” You can then use the smell to determine how fresh your cheese is going forward.
  2. What’s normal? Mold on cheese is not always a problem. Many cheeses are intentionally ripened with mold. Penicillium Roqueforti, for instance, gives rise to the delicious blue veins of Stilton, Roquefort, and Gorgonzola. Penicillium camemberti, on the other hand, is used to ripen creamy Brie and Camembert.
  3. It’s okay to trim it. While mold added to cheese during ripening shouldn’t be a problem, mold growing on the outside of the cheese can indicate that it isn’t 100% safe to eat. It’s not necessary to throw away hard cheeses. To salvage hard cheeses like Parmesan and Cheddar that have mold, you should cut off at least 1 inch from the edges.
  4. It is important to store it properly. Make sure the cheese you choose is soft and smooth. Also, ensure it doesn’t have any mold or cracks. It should be refrigerated immediately at home. To protect the cheese from mold spores or odors in your fridge, wrap it tightly. Wrap it in plastic wrap, or use a two-layer approach. First wrap in parchment paper or wax paper and then cover with aluminum foil.
  5. Be sure to know when to say what: Shelf life can vary depending on the cheese. Hard cheeses such as Swiss and cheddar will keep fresh for three to four weeks if they are opened. However, softer cheeses such as ricotta and Brie will last about one to two week.


It could be a sign that the cheese is not working properly. You should also be looking out for any changes in texture. It is possible to throw out any cheese that appears slimy or has bloated in the packaging.

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