Mold is a type of fungus that grows on organic matter, including food items such as cheese. Parmesan cheese is a popular ingredient in many dishes around the world. However, it is not uncommon for grated parmesan cheese to develop mold over time, especially if it has been stored improperly.

The question that arises in such a scenario is – Can You Eat Moldy Grated Parmesan Cheese? Let’s take a closer look at the answer.

What Causes Mold on Parmesan Cheese?

Parmesan cheese is made from unpasteurized milk, which means that it contains live bacteria. When the cheese is aged for an extended period, it creates an environment where mold can thrive. If the cheese has been exposed to air or moisture, the mold growth can accelerate.

Is Moldy Grated Parmesan Cheese Safe to Eat?

The short answer to this question is no. Eating moldy parmesan cheese can lead to food poisoning symptoms such as nausea, vomiting, and diarrhea. The reason behind this is that some molds produce mycotoxins – toxic substances that can cause harm to humans when ingested.

However, some types of cheeses are specifically produced with mold (such as blue cheese). These cheeses are safe to eat because they are made under controlled conditions where the type of mold used is not harmful.

How to Spot Mold on Grated Parmesan Cheese?

Mold on grated parmesan cheese can be easily spotted by its appearance and smell. If you notice any green or blue spots on your parmesan cheese or if it smells sour or off-putting, then it’s likely that it has developed mold.

How to Prevent Mold Growth on Parmesan Cheese?

To prevent mold growth on your parmesan cheese, store it properly in an airtight container in the refrigerator. This will slow down the aging process and prevent mold from developing. It’s also a good idea to keep the cheese away from any moisture or dampness.


In summary, it’s not safe to eat moldy grated parmesan cheese due to the risk of food poisoning. If you notice any mold on your parmesan cheese, it’s best to discard it and purchase a fresh batch. Remember to store your parmesan cheese properly to prevent mold growth and ensure that it stays fresh for longer.