cheeses displayed on wood cutting board

Moldy Cheese: How to Prevent, Fix, and When to Toss It Out

Call me picky, but I prefer my greens to be those of the garden variety, not something growing on my cheese. Moldy cheese can be quite disgusting but tossing it in the trash is not your only or even the best option.

cheeses displayed on wood cutting board

Don’t you just hate when this happens? You buy a block of cheese and before you can use it up it turns into something that looks more like a science fair project than a tasty dairy product.

I’ll admit it. Back in my carefree spendthrift days, I’d toss the cheese in the garbage when it turned moldy—oblivious to the fact that I might as well be tossing dollar bills.

True, we could opt for buying just a few slices at a time from the deli counter, but that’s too expensive. And unnecessary. I can save more than $2 a pound off the best price at the supermarket if I buy in bulk from a discount warehouse like Sam’s Club or Costco. And that presents a storage challenge.

Ounce of prevention

Whoever said, “An ounce of prevention is worth a pound of cure,” must have been a deli owner. Think about it. With all that cheese in those cases, have you ever seen one growing green mold that looks like we can grow in our refrigerators? Never. 

All I know about the proper care and handling of cheese I learned from one such person. That kind deli owner introduced me to the two archenemies of cheese: bacteria and air.

Air

Limit exposure to air and you can greatly extend the useful life of any type of cheese. For hard cheeses like cheddar or Monterey Jack, make sure that you keep them tightly wrapped with plastic wrap.

Bacteria

We know that it takes bacteria to make cheese in the first place, but that is much different than the kind of bacteria on your hands. My expert witness was insistent that touching the cheese with bare hands encourages mold to develop.

Rule 1

The first rule of mold prevention: Each time you open it, reseal just as tightly and completely as possible. That takes care of the air problem.

Rule 2

The second rule of mold prevention: Don’t touch the cheese! Even when you wash your hands well, some amount of bacteria remains and while not at all harmful to you or the cheese, that’s what gets that green thing going.

Either wear food preparation gloves or make sure the plastic is always creating a barrier between your hands and the portion of the cheese that’s going back into the refrigerator.

 

Pound of cure

For a cheese that has already turned, there are remedies. You can fix that green, moldy cheese.

Vinegar

You can actually wipe the mold away with a clean cloth you’ve dipped into white vinegar. Not the most pleasant job, it does work to save the cheese.

Cut it out

Another useful technique is to simply cut away the moldy parts. Once all the green is gone, treat this as you would a new block of cheese by following the two rules above.

 

FAQs

Do you have to toss all moldy cheese?

According to Liz Thorpe, cheese expert and author of The Book of Cheese, maybe not. If the mold is on the cut surface, just take a knife and scrape it off. She adds that you can also use a cheese plane to peel off a thin layer. The cheese underneath is fine. You just trim it off. That’s it.

What about cheese that I prepared for a cheese plate. It's been out for hours.

In general, says Liz, you can save the cheese and you can put it back into the fridge. Just do not touch it with your fingers. (See Rule 2 above.) There are a few exceptions: 1. If that cheese was next to say fish or meat, toss it due to the possibility of cross-contamination. 2. If it’s mozzarella or burrata (very soft cheese) that’s been sitting out at room temperature, give it the boot. 3. If it’s sheeps milk cheese, which because of the extra fat has turned “sweaty,” that does not mean it is bad. Just pat it off and then you can wrap it and keep it.


 

 

 

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3 replies
  1. Sheri B. says:

    Thank you so much for say. “Cut it out”!
    So many people when they see the mold , they throw it away . What a waste!
    I was raised to grate my own cheese fresh and wrap with plastic wrap tightly. And if there is any mold. Just cut it away. Not throw it away!
    But I never heard to not touch the cheese with you bare hands. We never use gloves. But I will start using Food grade prep gloves.
    Thank you again!

    Reply
  2. Lynn Smith says:

    Hard cheese keeps better when wrapped in parchment paper than with plastic. You can then put the parchment wrapped cheese in a ziplock.

    Reply
  3. Red says:

    My favorite reason to freeze cheese to crumble it! We buy a large block of feta cheese and slice it into smaller slices before putting it in food saver bags. When I want crumbled feta for a salad or omelet I remove on of these slices and crumble it with a fork. It’s much, much, cheaper than the tubs of feta cheese and the freezing first makes it easy to crumble.

    Reply

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