How to Know When Blue Cheese Has Spoiled

How to Know When Blue Cheese Has Spoiled

HomeCooking Tips, RecipesHow to Know When Blue Cheese Has Spoiled

When a food item has been deliberately made with mold (yes you read that right) it can be difficult to tell whether or not it’s actually spoiled. That’s exactly the case with blue cheese a dairy product known for its blue-green veins and strong odor. But even with all of its telltale funky qualities it’s still possible for this cheese to go bad. There are a few telltale signs that will let you know when that’s happened.

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Why don't you get sick from eating moldy cheese?

The signs of rot are much easier to spot once you understand what blue cheese is and the characteristics that typically define it. It’s made by adding Penicillium roqueforti a type of mold to the milk or curds used to make the cheese. Over the weeks and months that it needs to age the mold will grow and spread across the wheel creating that infamous tangy flavor plus those signature streaks of color and a creamy soft or crumbly chewy texture. Any deviation from these characteristics — particularly visual and olfactory changes — likely indicates that the cheese has deteriorated in quality and should be evaluated for spoilage. So if your blue cheese looks smells or feels different than when you bought it you may want to consider giving it another taste.

One of the biggest signs that blue cheese has gone bad is its color. As the name suggests this cheese is covered in blue-green mold and has a white or cream-colored base. If the mold or body of the cheese turns any other color such as black gray pink or yellow it's time to throw it out.

It’s especially time to toss your cheese if it becomes slimy or develops a fuzzy moldy layer on the outside. Another textural clue is if it becomes too dry and hard. Blue cheese can be creamy or crumbly depending on the type you buy but even if it’s meant to be firm it shouldn’t get so bad that it looks chalky. On the other hand it’s also a bad sign if you notice moisture buildup in the wrapping or packaging of your cheese.