Can You Eat Expired Parmesan Cheese Grated?

When it comes to expired food, most people err on the side of caution. However, there are certain types of food that can still be consumed even after their expiration date has passed. One such example is grated Parmesan cheese.

Is Expired Parmesan Cheese Safe to Eat?

The short answer: Yes, you can eat expired grated Parmesan cheese. Unlike some other types of cheese, such as soft cheeses like Brie or Camembert, Parmesan cheese is a hard cheese that has been aged for an extended period. This aging process helps to preserve the cheese and extend its shelf life.

However, it’s important to note that while you can technically eat expired grated Parmesan cheese, there are a few factors to consider before digging in:

1. Check for Mold

If your grated Parmesan cheese has developed mold, it’s best to discard it.

Mold can produce toxins that can be harmful if consumed. Always examine the cheese carefully before deciding whether it’s safe to eat.

2. Assess the Smell and Taste

An off smell or odd taste is a clear indication that your grated Parmesan cheese has gone bad. Trust your senses and avoid consuming any cheese that smells rancid or tastes unpleasant.

3. Consider Storage Conditions

The way you store your grated Parmesan cheese plays a crucial role in determining its shelf life. If the container was not sealed properly or if it was exposed to heat or moisture, the chances of spoilage increase significantly.

Tips for Properly Storing Grated Parmesan Cheese

To maximize the lifespan of your grated Parmesan cheese, follow these storage tips:

  • Seal it tightly: After each use, make sure to seal the container tightly to prevent air and moisture from getting in.
  • Refrigerate it: Grated Parmesan cheese should always be stored in the refrigerator at a temperature of around 40°F (4°C). This helps slow down the growth of bacteria and mold.
  • Avoid freezing: While you can freeze grated Parmesan cheese, it may affect its texture and quality once thawed. It’s best to consume it within a reasonable time frame rather than freezing it.


In summary, eating expired grated Parmesan cheese is generally safe as long as there are no signs of mold and it smells and tastes fine. However, proper storage is crucial to extend its shelf life and maintain its quality.

When in doubt, trust your senses and discard any cheese that appears or smells off. Enjoy your grated Parmesan cheese responsibly!