
Cheese is a beloved food item, but it can be tricky to store. While refrigeration is a modern convenience, cheese has been around for at least 7,500 years, and the aging process, often done at warmer temperatures, is essential to producing high-quality cheese. So, what happens when cheese gets warm? The answer depends on the type of cheese and how long it has been left out. Hard cheeses, such as Cheddar or Parmesan, have a lower moisture content and can withstand higher temperatures for longer periods. On the other hand, soft cheeses like Brie or Camembert are more perishable due to their higher moisture content and should be consumed or refrigerated within a few hours. While bacterial growth and spoilage are concerns, it is unlikely that a few hours at room temperature will lead to food poisoning, especially in pasteurized cheeses. However, to ensure food safety and maintain optimal flavor and texture, it is generally recommended to keep cheese refrigerated and bring it to room temperature before serving.
| Characteristics | Values |
|---|---|
| Ideal temperature for cheese | Room temperature |
| How long can cheese sit out | 2 hours (according to the U.S. Department of Health) |
| How long can cheese sit out at 90°F (32°C) | 1 hour |
| How long can hard cheese sit out | 8 hours |
| How long can soft cheese sit out | 2-4 hours |
| How long does unopened cheese last without refrigeration | A month |
| How long does unopened cheese last in refrigeration | 3-4 weeks |
| How long does opened soft cheese last in refrigeration | 1 week |
| How to store cheese | Wrap it tightly in wax paper or parchment paper, then place it in a plastic bag or airtight container |
Explore related products
What You'll Learn
- Soft cheeses should be discarded after two hours at room temperature
- Hard cheeses can be re-wrapped and refrigerated after two hours
- Refrigeration dries out cheese, causing a loss of quality
- Cheese is less prone to mould than other dairy products
- Cheese can be left out for up to eight hours, depending on the type

Soft cheeses should be discarded after two hours at room temperature
Soft cheeses, such as Brie, Camembert, cottage cheese, cream cheese, and mozzarella, have a higher moisture content and are therefore more perishable than harder cheeses. According to the U.S. Department of Health, perishable foods, including soft cheeses, should not be left out at room temperature for longer than two hours, as this increases the risk of bacterial growth and spoilage. This safety window is reduced to one hour if the temperature is above 90°F (32°C).
Soft cheeses can be left out at room temperature for up to two hours and still be safe to consume, but they should be discarded if left out for longer. This is because the higher moisture content in soft cheeses provides a more favourable environment for bacterial growth, increasing the risk of foodborne illness.
While it is unlikely that consuming cheese left out overnight will result in a food safety issue, it is generally recommended to err on the side of caution and discard soft cheeses that have been left out for extended periods. This is especially important if the cheese has developed mould, as this indicates spoilage and can potentially contaminate the entire product.
To prevent soft cheeses from spoiling, it is important to store them properly. They should be consumed within one week of opening and stored in the refrigerator, wrapped tightly in wax or parchment paper, and placed in an airtight container or plastic bag. This helps maintain moisture and prevents the growth of bacteria.
In summary, soft cheeses should be treated with caution if left out at room temperature for extended periods. To ensure food safety and maintain quality, it is best to discard soft cheeses that have been left out for longer than two hours and to follow proper storage practices to prolong their freshness.
The Ancient Art of Cheese Making
You may want to see also

Hard cheeses can be re-wrapped and refrigerated after two hours
When it comes to cheese, there are many variables to consider when determining if it has gone bad after being left out of the fridge. These include the type of cheese, the temperature of the room, and the amount of time it has been left out.
Hard cheeses, such as Cheddar, Swiss, Gouda, and Parmesan, have a lower moisture content and can generally be left out at room temperature for longer periods without spoiling. According to the U.S. Department of Health, hard cheeses can be left unrefrigerated for up to two hours and then re-wrapped and returned to the refrigerator. If the temperature is above 90°F (32°C), this duration decreases to one hour.
It is important to note that while hard cheeses can withstand being unrefrigerated for a longer duration, they should not be left out indefinitely. After two hours at room temperature, hard cheeses should be properly wrapped and refrigerated to maintain their quality and safety.
Leaving cheese out for extended periods may impact its quality, texture, and flavour. Hard cheeses left out for too long may become dry, crumbly, and less flavourful. Additionally, there is a potential risk of bacterial growth or mould, although this risk is minimal, especially in cheeses manufactured under safe conditions.
To summarise, hard cheeses can be left out at room temperature for up to two hours and then safely re-wrapped and refrigerated. However, it is important to prioritise cheese quality and safety by not pushing your luck with extended periods of unrefrigeration.
The Story Behind Philadelphia Cheese's Name
You may want to see also

Refrigeration dries out cheese, causing a loss of quality
Cheese is a beloved food item, but it can be tricky to store. While refrigeration is the most common method for storing cheese, it can cause the cheese to dry out, impacting its quality.
Cheese is a dairy product, and like all milk-based foods, it is perishable and susceptible to bacterial growth. The rate at which cheese spoils depends on its moisture content and whether it is fresh or aged. Soft cheeses, such as Brie, Camembert, and mozzarella, have a higher moisture content and are more perishable. They should be consumed within one week of opening and should not be left out at room temperature for more than two hours. If you notice any signs of spoilage, such as a slimy texture, a yellowed color, mold, sourness, or an ammonia scent, soft cheeses should be discarded immediately.
On the other hand, hard cheeses like Cheddar, Parmesan, and Gouda have lower moisture content and can sit out longer without spoiling. They can be left out at room temperature for up to four hours, and an unopened block of hard cheese can even be stored in a cool, dry place away from direct sunlight for one to two weeks. However, once opened, refrigeration is recommended to maintain quality and safety.
Refrigeration can help extend the shelf life of cheese, but it can also cause it to dry out. This is because cold temperatures can promote moisture loss and affect the texture of the cheese. To prevent cheese from drying out in the refrigerator, it is essential to wrap it properly using cheese paper, wax paper, or parchment paper. Plastic wrap should be avoided as it can trap moisture and promote mold growth. Additionally, storing cheese in the vegetable drawer of the refrigerator is ideal, as it has higher humidity, which can help prevent drying.
For cheese enthusiasts, refrigeration may not be the preferred method for storing cheese, especially aged cheeses. Cold temperatures can mute certain flavors and aromas, making the cheese taste less vibrant. Aged cheeses, in particular, are often best served at room temperature to allow their full range of flavors to express themselves. However, it is important to note that leaving cheese out for too long can impact its quality and taste.
In conclusion, while refrigeration is essential for food safety, especially for soft cheeses, it can cause cheese to dry out and affect its flavor and texture. Proper cheese storage depends on the type of cheese and the desired outcome. For optimal flavor and texture, some cheeses may benefit from being stored at room temperature or in specialized cheese vaults or cellars that maintain stable, cool temperatures.
The Art of Obtaining Gilded Cheese
You may want to see also
Explore related products

Cheese is less prone to mould than other dairy products
It is important to note that cheese can spoil if left unrefrigerated for extended periods, and the safety window depends on the type of cheese and its moisture content. Soft cheeses, such as Brie, Camembert, and mozzarella, have a higher moisture content and are more perishable, making them more susceptible to mould and bacterial growth. Hard cheeses, like Cheddar or Parmesan, have lower moisture content and can withstand warmer temperatures for longer durations without spoiling.
Soft cheeses with high moisture content, such as ricotta or cream cheese, are more prone to mould and should be discarded if mould is spotted. In contrast, hard cheeses like Parmesan can be left out for more extended periods, even up to 24 hours, according to some sources. This is because hard cheeses have lower moisture content and create an environment that is less conducive to mould growth.
The difference in mould susceptibility between soft and hard cheeses lies in their moisture content. Soft cheeses have higher water activity, providing an ideal environment for mould and bacterial growth. On the other hand, hard cheeses have lower water activity, making it challenging for mould to grow and spread.
Additionally, the processing and manufacturing methods of hard cheeses contribute to their lower mould susceptibility. Hard cheeses undergo more extensive processing, including pressing and ageing, which removes excess moisture and creates a denser, drier cheese. This lower moisture content inhibits mould growth and helps preserve the cheese.
To summarise, cheese is less prone to mould than other dairy products due to specific characteristics and processing methods of certain varieties. However, it is important to handle and store cheese properly to minimise the risk of mould and bacterial growth, especially for soft cheeses with higher moisture content. Proper storage involves wrapping cheese tightly in wax or parchment paper and then placing it in an airtight container or plastic bag.
Get Moon Cheese Hello Kitty: Where to Buy
You may want to see also

Cheese can be left out for up to eight hours, depending on the type
Cheese is a beloved food item, but it can be tricky to store and keep. While refrigeration is a modern convenience, cheese has been around for at least 7,500 years, and the aging process is essential to producing high-quality cheese. In fact, refrigeration is not a crucial factor in storing cheese, and many cheeses can be left out for extended periods without spoilage.
The safety window for leaving cheese out depends on its type, primarily its moisture content, and whether it is fresh or aged. Soft cheeses, such as Brie, Camembert, and mozzarella, have a higher moisture content and are more perishable. These cheeses should be consumed within one week of opening and should not be left out at room temperature for more than two hours. Leaving soft cheeses out overnight can lead to bacterial growth and spoilage.
On the other hand, hard cheeses like Cheddar, Parmesan, and Gouda have a lower moisture content and can withstand being left out for longer durations. These cheeses can be left out at room temperature for up to eight hours and can even be safely stored unrefrigerated for several weeks or months. If left out for too long, hard cheeses may develop a crusty and crumbly appearance, but this does not necessarily indicate spoilage.
It is worth noting that the U.S. Department of Health recommends not leaving perishable foods, including soft cheeses, unrefrigerated for more than two hours. Additionally, the ideal storage time and conditions depend on personal preferences and the desired cheese quality. For the best flavor and texture, it is recommended to let cheese sit out at room temperature for 20-30 minutes to two hours before serving.
The Secret to Crispy Cheese on Your Pasta Bake
You may want to see also
Frequently asked questions
According to the U.S. Department of Health, cheese should not be left out at room temperature for more than two hours. Hard cheeses like Cheddar or Parmesan can be left out longer than soft cheeses like Brie or Camembert without spoiling. However, if the temperature is above 90°F (32°C), the limit reduces to one hour.
Leaving cheese out overnight may impact its quality and increase the risk of bacterial growth, especially in softer cheeses. However, it is unlikely to cause food safety issues, and hard cheeses may still be safe to eat. If there is visible mould on the cheese, it should be discarded.
Cheese can be stored in a cool, dark place like a cellar, wrapped in wax or parchment paper, to prevent spoilage. Fresh, unripened cheeses like cottage cheese, cream cheese, and ricotta should be refrigerated, while aged cheeses can be stored unrefrigerated for a longer period.

























