Is Grated Parmesan Cheese Pasteurized?

When it comes to food safety, one question that often arises is whether grated Parmesan cheese is pasteurized. Pasteurization is the process of heating a food product to kill harmful bacteria and pathogens. In the case of Parmesan cheese, many people wonder if the cheese undergoes this process before being grated and packaged.

The Process of Making Grated Parmesan Cheese

Grated Parmesan cheese is made from the same delicious cheese as its solid counterpart, but it undergoes an additional step before being grated. The process typically starts with high-quality milk that is heated and curdled to separate the whey from the curds. These curds are then pressed and aged for several months to develop their distinct flavor.

Once the aging process is complete, the solid cheese block is shredded into smaller pieces. It is important to note that these blocks of Parmesan cheese are typically made from pasteurized milk, ensuring that any harmful bacteria that may have been present in raw milk are eliminated.

The Pasteurization Process

Pasteurization involves heating a food product to a specific temperature for a set amount of time in order to kill bacteria and pathogens. This process helps reduce the risk of foodborne illnesses caused by consuming contaminated products.

In the case of Parmesan cheese, pasteurization occurs during the initial stages of cheesemaking. The milk used to make Parmesan cheese goes through a heat treatment process known as thermization or low-temperature pasteurization. This method involves heating the milk at temperatures below 72°C (161°F) for 15-20 seconds.

This gentle heat treatment helps eliminate any harmful bacteria while preserving most of the natural enzymes and flavors in the milk. It ensures that the end product is safe to consume while maintaining the unique characteristics of Parmesan cheese.

Labeling and Regulations

In many countries, including the United States, there are strict regulations regarding food labeling. These regulations require that dairy products made from pasteurized milk be clearly labeled as such. Therefore, if you purchase grated Parmesan cheese from a reputable brand or source, it is highly likely that it is made from pasteurized milk.

However, it’s always a good idea to check the packaging or contact the manufacturer to confirm whether their grated Parmesan cheese is made with pasteurized milk. This information can also be found on their official website or customer service helpline.


When it comes to grated Parmesan cheese, you can generally assume that it is made from pasteurized milk. The process of making this delicious cheese involves both aging and pasteurization steps, which ensure its safety and quality.

Remember to always check the product labeling or reach out to the manufacturer if you have specific concerns about how your grated Parmesan cheese is produced. With proper handling and storage, you can enjoy your favorite dishes with peace of mind knowing that your grated Parmesan cheese is both delicious and safe!