Unveiling the secret: why does feta cheese sometimes turn blue?

Feta cheese, a beloved staple of Mediterranean cuisine, is renowned for its tangy, salty flavor and creamy texture. However, some cheese enthusiasts may have noticed an unexpected phenomenon – blue spots or discoloration on their feta. This intriguing occurrence sparks the question: “Does feta cheese turn blue?” In this comprehensive blog post, we delve into the intricacies of feta cheese and explore the reasons behind its potential blue hue.

Understanding Feta Cheese

Feta cheese is a traditional Greek cheese made from sheep’s milk or a combination of sheep’s and goat’s milk. It is characterized by its white or slightly yellow color, crumbly texture, and tangy flavor. The production process involves coagulating the milk with rennet, draining the whey, and then brining the cheese.

Causes of Blue Discoloration

While feta cheese is typically white or slightly yellow, it can occasionally develop blue spots or discolorations. This phenomenon is primarily caused by the presence of certain bacteria or molds.

Bacteria

Certain bacteria, such as _Brevibacterium linens_, can produce a blue pigment called indigoidine. This bacteria is commonly found on the surface of cheeses, including feta, and it can contribute to the development of blue spots.

Molds

Molds, such as _Penicillium roqueforti_, are also known to cause blue discoloration in cheese. These molds are responsible for the characteristic blue veins found in cheeses like Roquefort and Gorgonzola. However, it is uncommon for molds to grow on feta cheese due to its high salt content.

Is Blue Feta Safe to Eat?

In general, blue spots on feta cheese are not harmful and do not pose a health risk. The bacteria and molds responsible for the blue discoloration are typically benign and do not produce toxins. However, it is important to note that if the cheese has a strong, pungent odor or an unpleasant taste, it is best to discard it.

Preventing Blue Discoloration

To prevent blue discoloration in feta cheese, there are a few simple steps you can follow:

• Store feta cheese properly: Feta cheese should be stored in an airtight container in the refrigerator. This helps prevent the growth of bacteria and molds.
• Use a clean knife: When cutting or handling feta cheese, use a clean knife to avoid transferring bacteria from other surfaces.
• Avoid prolonged exposure to air: Feta cheese should not be left out at room temperature for extended periods. Prolonged exposure to air can increase the risk of bacterial and mold growth.

Benefits of Blue Feta

While blue discoloration in feta cheese is generally harmless, it can also be an indication of beneficial bacteria or molds. Some studies suggest that the presence of certain bacteria in cheese may have probiotic benefits, supporting gut health.

Troubleshooting Blue Feta

If you encounter blue discoloration on your feta cheese, here are some troubleshooting tips:

• Cut away the blue spots: If the blue spots are small and isolated, you can simply cut them away and continue eating the rest of the cheese.
• Discard the cheese: If the blue discoloration is widespread or the cheese has an unpleasant odor or taste, it is best to discard it.
• Contact the manufacturer: If you are unsure about the safety of your feta cheese, contact the manufacturer for guidance.

The Bottom Line: Embracing the Blue

The blue discoloration of feta cheese is a natural phenomenon that is not typically harmful. Understanding the causes and potential benefits of blue feta can help you make informed decisions about its consumption. Whether you choose to cut away the blue spots or embrace the unique flavor of blue feta, this beloved cheese continues to delight taste buds around the world.

Questions You May Have

Q: Is blue feta cheese safe to eat?
A: Yes, blue spots on feta cheese are generally harmless and do not pose a health risk. However, if the cheese has a strong odor or unpleasant taste, it is best to discard it.

Q: What causes blue discoloration in feta cheese?
A: Blue discoloration is caused by the presence of certain bacteria or molds. Bacteria such as _Brevibacterium linens_ produce a blue pigment, while molds like _Penicillium roqueforti_ can also contribute to blue veins.

Q: How can I prevent blue discoloration in feta cheese?
A: Store feta cheese in an airtight container in the refrigerator, use a clean knife when handling it, and avoid prolonged exposure to air.