How do you keep cheese from getting moldy?
The key is to wrap the cheese tightly in plastic wrap, then put into a zipper-top bag. Keeping air out helps prevent cheese from getting moldy. This is particularly important with soft cheeses.
Neglecting the Fridge
"Any moldy food will put additional spores in your refrigerator and could cause your cheese to mold faster," says Kerry Henning, master cheesemaker at Hennings Cheese. For food safety reasons, your refrigerator temperature should always be below 40°F.
"Too dry an atmosphere will mean the cheese will crack; too moist an atmosphere and mould growth is encouraged. Moulds are part of the natural development of cheese and often enhance their flavour but scrape them off if they look unattractive."
Once you open the package, the contents are exposed to environmental contaminates which cause the mold. If the package is kept sealed, it will be good until the expiration date.
So you can cut away the moldy part and eat the rest of the cheese. Cut off at least 1 inch (2.5 centimeters) around and below the moldy spot. Be sure to keep the knife out of the mold, so it doesn't contaminate other parts of the cheese. Of course, not all molds pose a risk.
The bottom line
After opening, you can safely store most soft cheeses in the fridge for at least 7 days and most hard cheeses for 3â4 weeks. Carefully inspect hard cheeses for mold and cut off any spots, but toss soft cheeses and crumbled, shredded, or sliced cheeses (whether hard or soft) if you see mold.
It's best to keep cheese, of all varieties, in a dark, cool and airy space â the vegetable compartment of an average fridge is ideal, as it is not too humid or cold. Cheese should be allowed to breathe, however this needs a little balance to avoid the cheese from drying out, or becoming too humid and sweaty.
4 Keep it in a sealed container
To avoid fluctuations of humidity from hitting your precious block of cheese, store your wrapped cheese in a sealed container, preferably made of glass. Unlike plastic, glass does not transfer smells.
- A resealable plastic bag will do the job, but it's not the ideal storage solution for your cheese. ...
- Store all types of cheese in the vegetable crisper of the refrigerator, where the temperature is cold and stable.
- Use a fresh piece of plastic wrap or wax paper to rewrap cheese after each use.
Moreover, freezing inactivates microbes in cheese, such as bacteria, yeasts, and mold. This helps extend the shelf life, preventing it from going bad (1, 2). However, freezing doesn't kill these microbes â it only damages them. Thus, they may become active again when the cheese thaws (2, 8 , 9 ).
What happens if I eat cheese with mold on it?
Dangers of eating moldy cheese
Molds can carry harmful bacteria, including E. coli, Listeria, Salmonella, and Brucella, all of which can cause food poisoning ( 5 , 6 ). The symptoms of food poisoning include vomiting, stomach pain, and diarrhea. In severe cases, it may lead to death.
It depends on the variety of the cheese. Different cheeses mold differently. Cheese with higher moisture, such as cream cheese, can mold within two or three weeks, whereas more rigid varieties of cheese, such as Parmesan, can take up to 10 months to mold.

Soft cheeses such as cream cheese, cottage cheese, shredded cheeses, and goat cheese must be refrigerated for safety. As a general rule, hard cheeses such as cheddar, processed cheeses (American), and both block and grated Parmesan do not require refrigeration for safety, but they will last longer if kept refrigerated.
Again, if you eat mold, the odds are high that nothing will happen or you may experience a slight gastrointestinal upset. âYou would need a very under-developed immune system and to eat a ton of mold in order to get sick,â Detwiler says. âEven that is not likely to kill you.â
Parchment or wax paper will work too. After it's wrapped, place it in a Ziploc bag, which allows the cheese some air to breathe. Remember to date and label your cheese as well. IIf you have a softer cheese like brie, Camembert or a blue cheese, you should store it in a clean, airtight container after wrapping.
The cold helps to preserve it and keep premature mold growth at bayâall things we want when storing cheese. In general, it's a good idea to keep your cheese in the cheese drawer or crisper to protect it from the drying air of your fridge.
Use cheese paper or aluminium foil
This keeps the cheese from drying out and allows it to breathe, ensuring it will last longer. Once wrapped, you should place your cheese in an airtight container to make sure it gets the right amount of moisture.
First things first: âAlways double-wrap your cheese â in waxed paper or baking parchment, ideally â and put it in a plastic container lined with dampened kitchen towel or J-cloth.â Then clap on the lid and put it in the top of the fridge â that's where the temperature is usually the most constant, unless you have a ...
The best way to store your cheese is in cheese paper. The next best thing (and probably the easier way, if you don't have cheese paper handy) is to wrap your cheese first in parchment or waxed paper, and then loosely in plastic wrap or a plastic baggie.
Leaving unwrapped or partially wrapped cheese in the fridge is basically a recipe for a big, dried-out, hard-as-a-rock, flavor-sapped rind. Worse, it's prone to picking up other flavors from the fridge.
What temperature kills mold on cheese?
What temperature kills mold spores in food? Most molds are killed off by temperatures of 60-70°C (140-160°F).
Rule 2. The second rule of mold prevention: Don't touch the cheese! Even when you wash your hands well, some amount of bacteria remains and while not at all harmful to you or the cheese, that's what gets that green thing going.
The mold is safe to eat, though some people cut it off because they don't like the flavor or texture. These cheeses are specially aged in a place that is full of mold spores, and carefully monitored so only the right kind of mold grows on them or in them.
Is cheese made from mold? Cheese is not mold nor is it the by-product of mold. Some cheese varieties like blue cheese have specific species of mold that are intentionally added during the cheesemaking process to enhance the flavor of texture. The mold added to these cheeses can be thought of as a special ingredient.
Velveeta may look like cheese and taste like cheese, but it is technically classified as a "pasteurized process cheese product." Originally, Velveeta was made from real cheese, but that is no longer the case.
Most shelf stable cheeses are HARD and DRY ones such as Cheddar, Parmesan, Gouda, Asiago and Romano.
"Leaving cheese out overnight may impact the quality of the product, but would notâin most casesâresult in a food safety issue," explains Adam Brock, director of technical services at Wisconsin Milk Marketing Board. If anything, there's a good chance you're over-refrigerating your cheese.
Store all types of cheese in the vegetable crisper of the refrigerator, where the temperature is cold and stable. Use a fresh piece of plastic wrap or wax paper to rewrap cheese after each use. The length of time you can keep cheese differs by variety; in general, the harder the cheese, the longer it will last.
If plastic wrap is a no-no, what should you wrap your cheese in? The overwhelming consensus is: cheese paper. This specialty item allows the cheese to breathe, but also protects it from drying out. If you don't want to invest in cheese paper, parchment paper (which we went with) works just fine.
Parchment or wax paper will work too. After it's wrapped, place it in a Ziploc bag, which allows the cheese some air to breathe. Remember to date and label your cheese as well. IIf you have a softer cheese like brie, Camembert or a blue cheese, you should store it in a clean, airtight container after wrapping.
What cheeses should not be refrigerated?
Soft cheeses such as cream cheese, cottage cheese, shredded cheeses, and goat cheese must be refrigerated for safety. As a general rule, hard cheeses such as cheddar, processed cheeses (American), and both block and grated Parmesan do not require refrigeration for safety, but they will last longer if kept refrigerated.
To keep yourself safe from bacterial growth or spoilage, you should only keep cheese out for four hours, according to Adam Brock, director of food safety, quality, and regulatory compliance at Dairy Farmers of Wisconsin.
To keep your cheese fresh for as long as possible, cheese bags or cheese paper is the best way to store it. It's porous, so it protects the cheese from air exposure while still allowing it to breathe. There aren't many manufacturers out there besides Formaticum, but it's well worth the investment.
Cheese is best stored in the refrigerator as close to the bottom of the appliance as possible - the vegetable compartment is ideal. Wrap it in aluminum foil or waxed paper (waxed paper being the best of the two). Wrapped this way, the cheese will be able to breathe and further develop without drying out.
Cheese keeps best when it is wrapped in waxed paper. This strikes the right balance between stopping the cheese from drying out and preventing too much moisture from building up. Cling film tends to trap moisture, which can encourage mould to grow on the surface of the cheese.
Johnson recommends putting the cheese you've wrapped in paper (not plastic!) in another container for extra protection â either Tupperware with holes poked in it or a plastic bag with holes poked in it. The holes are key, as cheese is a living thing.
References
- https://www.bhg.com/recipes/how-to/food-storage-safety/cheese-storage-mistakes/
- https://www.nationalgeographic.com/magazine/article/explore-decoder-cheese-bacteria-fungi-science
- https://www.beaconjournal.com/story/lifestyle/food/2017/03/08/hints-from-heloise-keeping-cheese/10768785007/
- https://www.tillamook.com/faq/cheese/what-are-these-cruncy-white-specks-in-my-cheese
- https://health.clevelandclinic.org/what-happens-if-you-eat-moldy-food/
- https://jenkinsenvironmentalservices.com/how-to-know-if-mold-is-making-you-sick/
- https://www.prevention.com/health/a40449653/what-happens-if-you-eat-mold/
- https://www.tasteofhome.com/article/can-you-eat-moldy-cheese/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC123731/
- https://en.wikipedia.org/wiki/Blue_cheese
- https://www.healthline.com/nutrition/is-moldy-food-dangerous
- https://www.healthline.com/nutrition/can-you-eat-bread-mold
- https://www.seriouseats.com/how-to-store-and-slice-cheese
- https://www.thrillist.com/health/nation/what-happens-if-you-eat-mold
- https://www.healthifyme.com/blog/mouldy-cheese/
- https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/molds-food-are-they-dangerous
- https://www.wisconsincheese.com/the-cheese-life/article/105/cheese-and-mold
- https://www.everydaycheapskate.com/moldy-cheese-fix-prevent-or-toss/
- https://www.quora.com/Why-is-bread-mold-considered-dangerous-to-eat-but-cheese-mold-is-not
- https://www.healthline.com/nutrition/can-you-freeze-cheese
- https://www.quora.com/Is-it-safe-to-eat-mold-mozzarella-cheese-Because-I-just-found-that-my-mozzarella-cheese-has-produce-a-blue-mold-but-it-doesn-t-take-up-much-area-plus-It-didnt-reach-expired-date-yet-It-just-produce-a-mole-before-the
- https://www.sciencedirect.com/topics/neuroscience/penicillin
- https://www.theguardian.com/food/2019/apr/19/whats-the-best-way-to-store-cheese
- https://www.myrecipes.com/extracrispy/cheese-unrefrigerated-overnight
- https://www.goodhousekeeping.com/uk/house-and-home/household-advice/a679120/top-tips-every-cheese-lover-should-know/
- https://www.sciencefocus.com/science/if-you-are-allergic-to-penicillin-can-you-eat-stilton/
- https://greenssteel.com/blogs/news/how-to-get-rid-of-mold-in-water-bottle
- https://www.splendidtable.org/story/2010/11/18/storing-cheese
- https://wagwalking.com/condition/moldy-food-mycotoxins-poisoning
- https://academic.oup.com/mmy/article/60/3/myac007/6517313
- https://www.beaconhealthsystem.org/library/faqs/moldy-cheese-is-it-ok-to-eat/
- https://www.imperial.ac.uk/news/204713/genome-alexander-flemings-original-penicillin-producing-mould/
- https://www.foodandwine.com/lifestyle/why-dont-we-get-sick-when-we-eat-moldy-blue-cheese
- https://www.wisconsincheese.com/about-cheese/blue-cheese-mold
- https://guide.michelin.com/en/article/dining-in/%E5%A6%82%E4%BD%95%E4%BF%9D%E5%AD%98%E8%8A%9D%E5%A3%AB
- https://www.wisconsincheeseman.com/blog/cheese-nation/blue-cheese-bleu-cheese-recipes/
- https://www.nlm.nih.gov/exhibition/fromdnatobeer/exhibition-interactive/illustrations/penicillin-alternative.html
- https://cheesegrotto.com/blogs/journal/cheese-storage-guide
- https://www.thekitchn.com/how-to-store-cheese-what-to-do-100285
- https://www.quora.com/Why-did-my-sharp-cheddar-cheese-get-moldy-in-the-refrigerator-after-only-2-weeks-The-expiration-on-the-package-says-May-of-2020-I-scraped-off-some-of-the-mold-and-tasted-it-and-it-was-disgusting-Will-it-make-me-sick
- https://www.healthline.com/nutrition/how-long-does-cheese-last-in-the-fridge
- https://www.realsimple.com/food-recipes/shopping-storing/food/how-store-cheese
- https://www.foodandwine.com/news/cheese-storing-mistakes
- https://www.neogen.com/neocenter/blog/yeast-and-mold-in-yogurt-five-facts-everyone-should-know/
- https://www.medicalnewstoday.com/articles/blue-cheese-types-benefits-risks-and-more
- https://www.allergyasthmaboston.com/new-blog/2020/2/4/the-history-of-penicillin
- https://www.foodnetwork.com/how-to/packages/food-network-essentials/what-happens-if-you-eat-mold
- https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/food-and-nutrition/faq-20058492
- https://www.bonappetit.com/story/how-long-can-cheese-sit-out
- https://www.delish.com/uk/cooking/a29536056/how-to-store-cheese/
- https://www.healthline.com/nutrition/moldy-cheese
- https://www.allrecipes.com/article/what-is-velveeta/
- https://en.wikipedia.org/wiki/Penicillium_camemberti
- https://ask.usda.gov/s/article/Does-all-cheese-need-to-be-refrigerated
- https://www.bustmold.com/resources/about-mold/where-to-look-for-mold/mold-on-food/
- https://blogs.cornell.edu/alcaine/2021/04/14/roses-are-red-the-mozzarella-is-blue/
- https://www.castellocheese.com/en-us/articles/how-to-store-cheese/
- https://www.thekitchn.com/mold-shredded-cheese-not-safe-to-eat-263839
- https://www.tillamook.com/faq/cheese/what-is-this-white-substance-outside-of-my-cheese
- https://www.healthline.com/nutrition/is-blue-cheese-mold
- https://food52.com/blog/9235-how-to-store-cheese
- https://food-hacks.wonderhowto.com/how-to/11-ways-keep-cheese-fresh-mold-free-for-as-long-as-possible-your-fridge-0151179/
- https://outdoorcrunch.com/cheese/
- https://www.eatingwell.com/article/7960395/is-it-safe-to-eat-moldy-cheese/
- https://www.thecourtyarddairy.co.uk/blog/can-i-eat-the-mould-on-my-cheese-mould-on-cheese-your-questions-answered/
- https://www.drink-milk.com/cheese-storage-tips/
- https://www.thecheeselover.co.uk/how-to-store-cheese/