Cheese Storage: How Long Does Processed Cheese Last?

Processed cheese is a popular variety of cheese in the USA, often used in sandwiches, burgers, soups, and casseroles. It is made by combining different kinds of cheese, such as cheddar and Colby, and is considered pasteurized. Despite being processed and pasteurized, it can and will go bad if not stored properly. The shelf life of processed cheese depends on various factors, such as the type of cheese, storage conditions, and temperature. In this article, we will explore how long processed cheese lasts, how to store it properly, and the signs of spoilage to look out for.

Processed cheese lasts 5-6 months unopened

Individually wrapped slices of processed cheese can be stored in the fridge as they come, and will last for 5-6 months. If you have stacks of slices or blocks of cheese, you will need to wrap them tightly in foil or plastic wrap to keep out air and moisture. For sliced stacks, it is recommended to first wrap in foil and then place in an airtight container. Blocks of cheese can be stored in the same way, or placed directly into the fridge.

Processed cheese can be frozen to extend its shelf life by up to 10 months. However, freezing will change the texture of the cheese, making it crumbly.

It is important to note that cheese should never be left unrefrigerated, as it is highly susceptible to bacteria. If left out on a hot day, it will go rancid.

It's good for 1-2 weeks once opened

Processed cheese, such as American cheese and cheese slices, should be stored in the original packaging or wrapped in plastic wrap or aluminum foil. It is important to store it in the refrigerator and consume it within a week of opening.

The shelf life of processed cheese can be extended by following some simple storage tips. Firstly, make sure to store it in the main part of the refrigerator, which is typically between 33°F and 40°F. Avoid keeping it on the door of the refrigerator as it is the warmest part. Additionally, ensure that the cheese is not touching any raw meat or seafood to prevent contamination.

To further extend the shelf life, you can wrap the cheese in wax or parchment paper before wrapping it in plastic wrap or aluminum foil. This will help to prevent the cheese from drying out and absorbing other flavours or odours in the fridge. Proper storage will also help maintain the quality, flavour, and texture of the cheese.

It is important to note that once the cheese has been opened and cut, it is no longer considered "vacuum-sealed". The cut surface of the cheese is exposed to air and bacteria, which can cause spoilage and affect the flavour and texture. Therefore, it is recommended to consume processed cheese within one to two weeks of opening for the best quality and taste.

It can be frozen for up to 10 months

Freezing processed cheese is a great way to extend its shelf life. While it can be stored in the freezer for an indefinite period, it is recommended that you aim to use it within 6 to 9 months. This is because, over time, the quality of the cheese will deteriorate, and it may become more crumbly and dry.

If you do choose to freeze your processed cheese, it is important to prepare it properly to ensure the best possible quality and taste. Firstly, if you are freezing a block of cheese, it is advisable to slice or portion it into smaller amounts. This will allow you to thaw only what you need, rather than having to defrost the entire block at once. Wrap each portion carefully in foil or plastic wrap, ensuring it is well sealed. Then, place the wrapped portions in a freezer bag or box designed for freezer storage.

When you are ready to use your frozen processed cheese, simply remove the required portions from the freezer and allow them to thaw in the refrigerator. It is important to note that you should not refreeze thawed cheese, as this can further affect its texture and quality. Once thawed, the cheese will likely have a more crumbly texture than fresh cheese, but it can still be used in various dishes such as soups, casseroles, and stews.

While freezing is an option for extending the shelf life of processed cheese, it is important to consider the potential impact on its taste and texture. Some sources suggest that freezing and thawing processed cheese can alter its flavour and make it grainy, affecting its meltability. Therefore, if you plan to use the cheese for dishes where melting is important, such as grilled cheese sandwiches or cheeseburgers, freezing may not be the best option. In such cases, it is recommended to store the cheese in the refrigerator, ensuring it is tightly wrapped to maintain freshness.

It's susceptible to bacteria if left out

Processed cheese is a versatile and tasty food product with a relatively long shelf life. However, it is important to handle it properly to prevent bacterial growth and foodborne illnesses.

Processed cheese, such as American cheese slices, is highly susceptible to bacterial growth if left out at room temperature. The ideal environment for bacterial growth is between 40°F (4°C) and 140°F (60°C). At room temperature, processed cheese can only be safely left out for about two hours. If left out longer, it becomes a breeding ground for bacteria, which can lead to food spoilage and the risk of foodborne illnesses.

To prevent bacterial growth and maintain the quality of processed cheese, proper storage is essential. When storing processed cheese, it is crucial to keep it refrigerated. The refrigerator temperature should be maintained below 40°F (4°C) to significantly reduce the rate of bacterial growth and spoilage. Additionally, ensure that the cheese is tightly wrapped or sealed in its original packaging. This prevents air and moisture exposure, which can lead to hardening and discolouration.

For individually wrapped slices, you can store them as-is in the fridge. They will last for about 1-2 weeks if opened or up to 6 months if unopened. For stacked slices without individual wrapping, tightly wrap the entire stack in foil or plastic wrap. This type of cheese is more susceptible to air and moisture exposure, which can affect its quality and taste. Therefore, proper wrapping is crucial to maintaining its freshness.

If you live in a place with a cold climate, processed cheese can be left out at room temperature overnight or for a maximum of one day. Beyond that, it will turn rancid due to bacterial growth. It is important to note that the cheese's quality may start to decline after the best-by or sell-by date, so it is recommended to consume it within 2-3 weeks after this date.

In summary, processed cheese has a relatively long shelf life when properly refrigerated and stored. However, it is highly susceptible to bacterial growth if left out at room temperature for extended periods, which can compromise its quality and safety. Therefore, it is essential to follow safe food handling practices and store processed cheese in the refrigerator to maintain its freshness and prevent foodborne illnesses.

It can be used in soups and casseroles

Processed cheese is a versatile ingredient that can be used in various dishes, including soups and casseroles. Its ability to melt smoothly makes it a great additive to these types of dishes.

When it comes to the shelf life of processed cheese, proper storage is crucial. Individually wrapped slices can be stored in the fridge as they come, and they will last for about 1-2 weeks if opened or 5-6 months if unopened. The best indicator of freshness is the date printed on the package. If you opt to freeze the cheese, it can last for up to 10 months in the freezer when well-wrapped.

For stacked slices of processed cheese that are not individually wrapped, ensure they are tightly wrapped in foil or plastic wrap to prevent air and moisture from affecting their quality. This type of cheese has a similar shelf life to individual slices but requires more careful storage.

Blocks of processed cheese also need extra precaution during storage. They should be tightly wrapped in foil or plastic wrap and either placed in an airtight container or directly in the fridge. Blocks of cheese will last for about 6 months in the fridge if unopened and around 1-2 weeks if opened. Freezing blocks of cheese is an option for longer-term storage, but it is recommended to slice or portion them out before freezing to facilitate easier thawing and usage.

While processed cheese can be a convenient and tasty addition to soups and casseroles, it's important to monitor its freshness and follow proper storage guidelines to ensure optimal quality and safety.

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