How to Tell if Parmesan is Bad?

A key sign to watch for when you buy Parmesan is noticing mold spots on the cheese. This can be gray or green, and it will ruin your dinner. The good news is that mold cannot penetrate hard cheeses like Parmesan, so you can cut the nasty chunks off and continue to use them. You may even be able to eat the moldy pieces, but you should throw them out. To know how to tell if parmesan is bad, read further.

How to Tell If Parmesan is Bad

You can usually tell if the Parmesan is wrong if it develops a funny smell or has mold spots. It is safe to eat the cheese if you can see the spots. However, if you can’t find them, you may have to throw them away. Remember that moldy cheeses aren’t good for your food. You can also check the “best by” date to see if the cheese has gone wrong.

Parmesan Nutrition Fact

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How To Tell If Parmesan Is Bad?

When cheese gets terrible, the mold spots are usually visible. The mold patches on hard cheeses like Parmesan can be removed, and the rest is eaten.

It’s typical for the rind of Parmesan to be darker and rougher than the remainder, and it is, nevertheless, still edible.


You should also pay attention to the color of the cheese. If it’s a dark yellow, it is probably wrong. It also has a funky smell. If it’s black, it is probably mold. If it’s green, it’s okay to eat it. But if it’s dark brown or gray, it’s best to throw it out. The smell is another sign that the cheese is terrible.

When Parmesan is wrong, it will smell funny. The cheese will lose its flavor and start to turn gray or dark, and it will also have an unpleasant smell. If you notice a yellowish or brownish color, you should throw it away. A grayish or dark-colored parmesan is terrible. If you want to save it, keep it in a cool place where it can be used as often as possible.


The smell is an easy sign that the Parmesan is bad. If it is smelled like cheese, you can usually detect the smell. Bad cheese will have a strong, unpleasant odor. If it looks different in color, it is most likely spoiled. A cheese that looks yellow or a darker beige will be rotten. If the texture is different, it is a good sign it is terrible. If it turns spongy, it is probably a bad one.

Another way to tell if Parmesan is wrong is to smell it. The smell of fresh cheese is a good indicator of how old cheese is. If it smells moldy, it’s time to throw it out. It’s best to get a block of the same brand. It’s also worth noting that a block of Parmesan with a darker rind is not necessarily bad.

Despite its smell, Parmesan that is moldy, is likely to be wrong. The cheese will have a different color than the one it was before, and the texture will change. The cheese will also be spongy. Unless it has mold, it is not an excellent choice to eat it, and it will just ruin your meal. It’s essential to make sure you’re buying a parmesan of the correct type.


The grated version of Parmesan will have a moldy odor, but it is not necessarily bad. A moldy parmesan will have a spongy texture and be wet or moldy. It can still be a great cheese, but the odor will differ from a block. A block of Parmesan will have a darker rind than the sprinkle variety, and the rind of a block of this cheese is more likely to be moldy.

The rind of the cheese is a clue to whether it’s moldy or not. The rind is a good sign that it is fresh. If it’s moldy, it may be too hard to remove. But if it’s brown, it is wrong. If it’s yellow, it’s probably not moldy. But it could be harmful. In addition, it will be difficult to tell if it’s moldy.

What Is The Best Way To Store Parmesan Cheese?

Let’s begin by storing a parmesan block (or chunk). It’s similar to preserving any other hard cheese.

When it comes to storage, please put it in the fridge as soon as you get home, preferably in the vegetable crisper, which is usually quite damp.

The blocks are vacuum-sealed, so opening the packaging before you need the cheese is pointless.

When you open the package, you’ll notice that you have a few storage options. One method is to wrap the package (or just the cheese) with aluminum foil. Cheese paper, wax paper, or parchment paper can also wrap the cheese.

Fortunately, someone conducted a study of numerous storage methods to determine the best option. According to this Cook’s Illustrated article, simply putting the cheese in a freezer bag and sealing it tightly produces excellent results.

You can also use an airtight container ([PR]), but this isn’t as good because it contains more air.

There are many options when it comes to shredded and grated Parmesan. And they aren’t all made equal.

These are available in both refrigerated and non-refrigerated forms. As a result, the ideal place to keep an unopened product is in the same area in the supermarket.

No matter whose flavor we’re talking about, once you open it, it goes straight into the fridge, tightly wrapped.

Is Parmesan Cheese Freezable?

Because parmesan wedges keep for a long time in the refrigerator, freezing them is rarely necessary. On the other hand, Shredded Parmesan only lasts a few days (more on that later in the article).

As a result, you may be seeking strategies to increase its shelf life. And in this case, freezing is unquestionably the best option.

Fortunately, shredded Parmigiano Reggiano (the official name for parmesan cheese) stores well and may be used in various ways.


What Is the Shelf Life of Parmesan Cheese?

Parmesan is a hard cheese, and as such, it has a long shelf life.

The Parmesan should last about 7 to 9 months if left unopened. Of course, there should be a “use-by” or “best if used by” date on the label or something similar. Because Parmesan is a long-lasting cheese, it should be fine for a few weeks after the expiration date.

The Parmesan should keep its finest quality for roughly 1 to 2 months after you open the packet. It will, however, hold its freshness for much longer (because of its excellent preservation [RIU]), maybe 6+ months after opening.

It should also have a ” use-by ” date for refrigerated shredded or grated Parmesan; it should also have a “use-by” date. Because the product gets shredded, the quality decreases more quickly. As a result, it should last for about a week after that date, and that’s all there is to it.

Use the cheese within 3 to 5 days of opening the packaging for the best quality and up to 7 days for acceptable quality.

Finally, unrefrigerated canisters of grated Parmesan are available. It usually lasts a year, if not more. That Parmesan always has a best-by date on it, and you can safely expect that it will keep for at least a month after that date has passed. Because the cheese is dehydrated, bacteria cannot grow on it, resulting in longer shelf life.


Although parmesan cheese is relatively long-lasting and can be safely consumed, it can go wrong if it has white spots on the surface. A few weeks in the fridge or freezer will do. A shredded parmesan can be consumed up to a week after it has gone wrong. A few days in the refrigerator is fine, but it will last for up to seven days if you store it properly.