It depends on the expiration date. Typically, grated Parmesan cheese has a relatively long shelf life and you can usually still safely eat it several weeks after the indicated expiration date. However, after the expiration date has passed, the quality may deteriorate and the cheese may start to change texture, color, and/or taste.
It’s also possible for bacteria to start to grow as well. Therefore, it is not typically recommended to eat expired grated Parmesan cheese. To ensure safety, it’s best to check the expiration date of the Parmesan cheese before using it and toss it if it has been past its expiration date.
How long does grated Parmesan cheese last after expiration date?
Once a grated Parmesan cheese has reached its expiration date, it should be treated as expired and no longer used. It is highly recommended that you throw it away as soon as possible to prevent any risk of foodborne illness.
Unopened and grated Parmesan cheese can last for several months after the expiration date if it is kept in the refrigerator. However, it is unsafe to consume as bacterial levels will have increased. Once the grated Parmesan cheese is opened and exposed to air, it will start to go bad much sooner and should only be consumed within 1-2 weeks of opening.
If stored properly, grated Parmesan cheese has a shelf life of up to 4-6 months.
How do you know if grated Parmesan cheese is bad?
First, check the expiration date on the package. If it has passed, the cheese is not safe to consume. Next, look for a sour or unpleasant odor coming from the cheese. If the cheese smells off, it is likely spoiled.
Third, check the color of the cheese. White and yellow colors usually indicate the cheese is still good; any discoloration such as green, blue, or black, however, means it has gone bad. Finally, check the texture of the cheese as it should have a crumbly texture.
If it feels slimy or overly soft, it is likely spoiled.
Does Parmesan cheese go bad in the fridge?
Yes, Parmesan cheese can go bad in the fridge. It should be stored in an airtight container or wrapped in wax or parchment paper and placed in the refrigerator. The shelf life of Parmesan cheese is typically two to three months.
Once the cheese has been opened and exposed to air, the shelf life is shortened. The cheese should be inspected for any signs of mold growth, which may indicate the cheese is no longer safe to eat. If the cheese is past its expiration date or has been left out of the refrigerator for too long, it should be discarded.
How long is Parmesan cheese good for after sell by date?
Parmesan cheese is an aged cheese and generally has a long shelf life, making it an ideal pantry staple. When stored properly, Parmesan cheese can last beyond its best by or sell by date. If unopened and stored in the refrigerator, it is usually good for up to six months past the printed date.
If you’ve opened it and it’s been sealed, it has a use by date which is typically about three weeks from the printed date.
If stored in the freezer, Parmesan cheese can last for up to six months before it begins to lose its flavor and texture. When choosing whether to refrigerate or freeze your Parmesan cheese, it’s important to consider how often you will use it.
If you plan on using it often, it’s best to keep it in the refrigerator. If you plan on using it less frequently, it’s best to freeze it.
No matter how you store it, unless Parmesan cheese has gone bad due to leaving it out of the refrigerator for long periods of time or if it’s moldy, worse, it’s important to practice safe food handling.
Always smell the cheese and check for any fuzzy or slimy spots before using it. If there is any, discard it.
Can old grated cheese make you sick?
Yes, old grated cheese can make you sick. Bacteria can grow quickly when cheese is stored incorrectly or left out in the open air, so it’s important to be careful about how you store and handle grated cheese.
If cheese has been left out for too long, it could cause food poisoning due to bacteria like Salmonella, Listeria, and E. coli. These bacteria can cause abdominal cramps, fever, nausea, vomiting, and diarrhea.
Always check the expiration date of your cheese and make sure it is still good. Furthermore, it is important to keep cheese stored in the refrigerator and make sure any opened packages are tightly sealed.
Make sure grated cheese is used within 4-5 days of being opened and dispose of anything that is old, spoiled, or has come into contact with contaminated surfaces. Additionally, be sure to thoroughly wash your hands after handling and prepare food on separate surfaces.
Taking these safety measures will help to ensure that you don’t get sick from old grated cheese.
Can shredded Parmesan cheese go bad?
Yes, shredded Parmesan cheese can go bad. Just like any other cheese, it can spoil over time, especially if it is not stored properly or if it is exposed to heat or moisture. It is also possible for it to be contaminated with bacteria.
Parmesan cheese should be stored in the refrigerator, in an airtight container, and consumed within three weeks of purchase. If the cheese is past its expiration date, has a strange odor, or shows signs of mold, it should be discarded.
Can you get food poisoning from moldy Parmesan cheese?
Yes, it is possible to get food poisoning from moldy Parmesan cheese. Mold can produce toxins that can make people sick, especially if it forms on soft cheeses such as Parmesan. Not all types of mold are dangerous; however, some can produce mycotoxins — substances that can cause severe illness when consumed.
It is important to be aware of the health risks involved with eating food that has gone bad and to discard any food that has become moldy. If you do consume moldy cheese, its important to watch for any symptoms of food poisoning, such as nausea, vomiting, abdominal pain, and diarrhea.
It is wise to seek medical attention if symptoms do occur.