Cheese is a dairy product made by curdling milk and pressing it into molds. They come in several varieties, including brie, cheddar, and camembert, with different textures and flavors.
Whether preparing for a casual family gathering, a cocktail party, or simply enjoying some cheese at home, it’s important to know that cheese can safely stay out of the refrigerator for a fixed time.
In this guide, you’ll learn how long cheese can sit out and essential tips on proper cheese storage.
How long can cheese sit out of the fridge?
According to food safety experts, cheese can sit at room temperature for about two hours. However, some cheese may exceed this duration without going bad.
Harder cheeses, for example, are less prone to bacterial growth due to their low moisture content. You might find that these cheeses, such as Parmesan, Asiago, and Cheddar, can endure a bit longer than the two-hour rule, but it’s better to be cautious and stick to the safety guidelines.
Products like American singles or cheese spreads may also last slightly longer than natural cheeses due to preservatives that extend their shelf life. Soft cheeses, on the other hand, are more perishable as they contain more moisture than other cheeses, creating an ideal environment for bacteria to thrive. They should be put back in the fridge within the two-hour window to prevent any food-borne illnesses.
How do you know if cheese has gone bad?
Your cheese might be spoiled if you notice any of the following signs:
Mold growth
While some cheeses, like blue cheese, naturally contain mold, visible mold growth on non-mold cheeses (like cheddar or mozzarella) is a sign of spoilage, and the cheese should be discarded.
If you find any molds on hard cheeses, you can cut off at least an inch around and below the mold spot and still safely consume the cheese. Soft cheeses with mold should be discarded entirely.
Unpleasant smell
Fresh cheese should smell creamy, tangy, or according to its specific type. If your cheese emits an ammonia-like or sour smell, it’s likely gone bad. Trust your nose with this one—if it smells off, it’s better not to risk it.
Slimy or sticky texture
For soft cheeses, any signs of sliminess or a tough texture indicate spoilage. Hard cheeses that have become overly dry or that crumble in an unnatural way, may also be past their prime.
Do a taste test
If the cheese looks and smells fine, but you’re still unsure, a small taste test can help. Spoiled cheese will often have a sour, unpleasant taste. If it tastes off, it’s best to throw it out.
How to keep your cheese fresh
Ensuring your cheese remains fresh and delicious involves more than just monitoring how long it sits out during your gatherings. Proper storage and handling before and after an event are equally important to help maintain the quality of your cheeses. Here are some tips to adhere to:
Wrap properly
Cheeses are best wrapped in cheese paper, parchment paper, or wax paper. This helps the cheese breathe and prevents moisture buildup, which can cause molds. Avoid plastic wrap if possible, as it can suffocate the cheese and alter its flavor.
Temperature and humidity
Store your cheese in the warmest part of the refrigerator, such as a vegetable drawer, which typically provides a slightly more humid environment. This can help prevent your cheese from drying out.
Separate strong flavors
Keep cheeses with strong odors or flavors wrapped separately to prevent them from affecting mild cheeses. For instance, blue cheese and gorgonzola can impart their flavors onto other cheeses if stored together without adequate separation.
How long does cheese last in the refrigerator?
The longevity of cheese once refrigerated depends on its type. Fresh cheeses such as Ricotta, Mascarpone, and fresh Mozzarella are more delicate due to their higher moisture content. These should ideally be consumed within one week of opening. Keep them in their original packaging if possible, or rewrap them tightly in cling film or airtight containers to keep them from drying out.
For semi-soft cheeses like Havarti, Fontina, and Monterey Jack, the shelf life is about two weeks after opening. Hard cheeses such as Cheddar, Gouda, and Parmesan are more durable. Unopened, these cheeses can last for months. Once opened, they can still maintain good quality for about three to four weeks in the refrigerator.
For very hard cheeses, like aged Parmesan or Pecorino, you can store them in the refrigerator for up to six months. Blue cheeses typically last three to four weeks after opening if stored in airtight containers.
Frequently Asked Questions
Can cheese sit out overnight?
No, it’s not safe to leave cheese out overnight. Cheese should generally not sit out for more than two hours at room temperature. Leaving it out longer increases the risk of bacterial growth.
How do you know if cheese has gone bad?
Cheese that has gone bad will often have visible mold (other than the types it was made with, like blue cheese), an off smell, and an unpleasant taste. If the cheese feels overly slimy or dry, it could also be a sign that it has spoiled.
How can you safely extend the time cheese is left out?
Using cooling plates or serving cheese on chilled platters can help keep it cooler for a longer period, potentially extending the safe window beyond two hours. However, this does not replace the need to monitor its exposure to room temperature closely.
Is it safe to re-refrigerate cheese after it has been left out?
Yes, if the cheese has not been left out for more than two hours, it is generally safe to wrap it and put it back in the refrigerator.
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Wrapping up: So, how long can cheese sit out?
When it comes to leaving cheese out, the two-hour rule is generally a good guideline, especially for soft and semi-soft cheeses like mozzarella, Gorgonzola, and Gouda.
For hard cheeses, you have a bit more leeway, with up to four hours being safe under most room temperature conditions. Remember to keep your cheese covered and cool until it’s time to serve.
