How long does grated parmesan cheese last in the fridge?

In this brief guide, we are going to answer the question “How long does grated parmesan cheese last in the fridge” with an in-depth analysis of the shelf life of parmesan cheese. Moreover, we are going to discuss the different ways to spot spoiled parmesan cheese.

So without much ado, let’s dive in and figure out more about it.

How long does grated parmesan cheese last in the fridge?

If unopened, unrefrigerated grated parmesan cheese is kept in the fridge, it can last for up to 10 months. Thus, unopened grated or shredded parmesan cheese that is sold unrefrigerated lasts for a month in a cold, dry, and dark corner of the pantry away from direct sunlight and heat, even after the use by or best before date has passed. 

When stored in an airtight container or plastic zipper bag in the fridge at or below 40 degrees Fahrenheit, however, opened grated or shredded parmesan cheese that is sold unrefrigerated lasts for around 4-6 months.

It’s worth noting that the values given above are for parmesan cheese’s expected shelf life. 

What is the best temperature to keep grated parmesan cheese at?

Grated parmesan cheese should be kept at 40 degrees Fahrenheit or lower at all times. Bacterial development is more rapid between the temperatures of 40 and 140 degrees Fahrenheit, therefore it’s best to keep your grated parmesan cheese at a lower temperature to keep it fresh for longer.

How long does grated parmesan cheese last at room temperature?

When kept at room temperature, grated parmesan cheese lasts for around 4 hours.

Because bacterial growth occurs at a quicker rate between 40 and 140 degrees Fahrenheit, grated parmesan cheese left out for more than 4 hours should be discarded.

Furthermore, if the surrounding temperature is around 90 degrees Fahrenheit, the rotting process is accelerated, and grated parmesan cheese left out in the open for more than an hour or two at such temperature should be discarded.

How long does grated parmesan cheese last in the freezer?

Generally, grated parmesan cheese lasts for about 12-18 months in the freezer if stored in an airtight plastic freezer bag.

As a result, freezing the parmesan cheese extends its shelf life significantly due to the freezer’s low temperature, which inhibits bacterial growth on the parmesan cheese.

How to defrost frozen grated parmesan cheese?

You can quickly defrost frozen grated parmesan cheese by placing it in the refrigerator overnight, and thawed parmesan cheese can be stored in the refrigerator for 3-4 days before reheating and consuming it.

If you’re defrosting frozen parmesan cheese in a bowl of cold water, the microwave, or on the counter, you should utilize it right away after reheating it.

If you have stored grated parmesan cheese in portions, you can directly add the frozen grated parmesan cheese in the recipe you are making but do not forget to change the cooking time according to the frozen cheese.

How to vacuum seal grated parmesan cheese? 

You may even vacuum seal your grated parmesan cheese at home to extend its shelf life. It involves adding the grated parmesan cheese in a plastic zipper bag, eliminating the air, then nearly sealing the bag with a small amount of space remaining while lowering it into water.

After that, start pressing out the bubbles starting from the bag’s bottom and work your way up to the sealed end, closing the bag’s seal. 

A vacuum sealer pump can also be used to easily vacuum seal parmesan cheese at home.

What are different ways to spot spoiled grated parmesan cheese?

There are a few clear indicators that indicate if your grated parmesan cheese has gone bad. To determine if parmesan cheese has gone bad, look at its appearance and smell.

Appearance

In case you notice that the color of the grated parmesan cheese changes to more yellow or darker beige, it’s time to throw it out.

Smell

If you smell something sour or funny while sniffing your parmesan cheese, it’s time to throw it out.

Thus, if the microbes have somehow gotten into your parmesan cheese and spoiled it, the best thing you can do is throw it out.

How to properly store parmesan cheese?

  1. Unopened, unrefrigerated grated parmesan cheese can be kept for a long time in a cool, dry, and dark corner of the pantry away from direct sunlight and heat. You may even keep it refrigerated to extend its life.
  1. Because microscopic organisms grow quickly at temperatures between 40°F and 140°F, it is best to refrigerate the grated parmesan cheese in airtight containers or plastic zipper bags to extend its shelf life while keeping its quality.
  1. The grated parmesan cheese should be kept on the lowest shelf of the refrigerator since it is the coldest portion of the fridge, with a temperature of 38 to 40 degrees Fahrenheit.
  1. If you wish to extend the shelf life of grated parmesan cheese, keep it in an airtight container or plastic freezer bag in the freezer. Grated parmesan cheese that has been frozen at 0°C is safe to use for extremely long periods.

You can read about different types of cheese here.

Conclusion

In this brief guide, we answered the question “How long does grated parmesan cheese last in the fridge” with an in-depth analysis of the shelf life of parmesan cheese. Moreover, we discussed the different ways to spot spoiled parmesan cheese.

Citations

https://www.stilltasty.com/fooditems/index/17873

What was missing from this post which could have made it better?

Leave a Comment