Cheddar cheese’s hidden transformation: why it turns white

Cheddar cheese is a beloved staple in many households, known for its sharp, tangy flavor and vibrant orange hue. However, sometimes cheddar cheese can develop white spots or patches, raising the question: “Why does cheddar cheese turn white?” This phenomenon, known as “white spotting,” is a common occurrence that can affect both natural and processed cheddar cheeses.

Causes of White Spotting

White spotting in cheddar cheese is caused by the crystallization of calcium lactate, a salt that forms when calcium ions in the milk react with lactic acid produced by the bacteria during cheesemaking. This crystallization process occurs when the cheese is exposed to temperature fluctuations or changes in pH levels.

Temperature Changes

Cheddar cheese is typically aged at cold temperatures to promote the development of flavor and texture. However, if the temperature rises too high during storage or transportation, the calcium lactate crystals can dissolve and then recrystallize upon cooling. This recrystallization can result in the formation of visible white spots.

pH Changes

The pH level of cheddar cheese is also a factor in white spotting. When the pH level drops, such as when the cheese is exposed to acidic substances, the calcium lactate crystals can become more soluble and dissolve. This can lead to the disappearance of white spots. Conversely, when the pH level rises, the crystals can become less soluble and more likely to recrystallize, causing white spots to reappear.

Types of White Spotting

There are two main types of white spotting in cheddar cheese:

Surface Spotting

This type of white spotting occurs on the surface of the cheese and is typically caused by temperature fluctuations. The crystals are small and appear as tiny white dots.

Interior Spotting

Interior spotting occurs within the body of the cheese and is caused by changes in pH levels. The crystals are larger and more noticeable, giving the cheese a mottled appearance.

Is White Spotting Harmful?

White spotting in cheddar cheese is not harmful to consume. It is simply a cosmetic issue that does not affect the flavor or safety of the cheese. However, some consumers may find it unappealing and prefer to avoid cheese with white spots.

Preventing White Spotting

There are several steps that can be taken to prevent white spotting in cheddar cheese:

• Maintain consistent temperature: Store cheddar cheese at a constant temperature between 35-40°F.
• Avoid extreme temperature fluctuations: Do not expose cheddar cheese to rapid changes in temperature.
• Control pH levels: Use a starter culture to maintain a stable pH level during cheesemaking.
• Use calcium chloride: Adding calcium chloride to the milk before cheesemaking can help to prevent the formation of calcium lactate crystals.

Troubleshooting White Spotting

If white spotting occurs in cheddar cheese, there are a few steps that can be taken to resolve the issue:

• Raise the temperature: Temporarily raising the temperature of the cheese to 60-65°F can help to dissolve the crystals and prevent further spotting.
• Lower the pH level: Adding a small amount of vinegar or lemon juice to the cheese can help to lower the pH level and dissolve the crystals.
• Re-age the cheese: Re-aging the cheese at a consistent temperature can help to stabilize the crystals and improve the appearance of the cheese.

Final Thoughts: Embracing the Unexpected

White spotting in cheddar cheese is a common occurrence that is not harmful to consume. By understanding the causes and taking steps to prevent and troubleshoot this phenomenon, you can enjoy the full flavor and beauty of this beloved cheese. Remember, the occasional white spot is a testament to the natural aging process and adds character to this culinary staple.

Common Questions and Answers

Q: Is white spotting in cheddar cheese dangerous?
A: No, white spotting is not harmful to consume. It is simply a cosmetic issue.

Q: Can white spots be removed from cheddar cheese?
A: Yes, raising the temperature or lowering the pH level of the cheese can help to dissolve the crystals and remove the white spots.

Q: Is it okay to eat cheddar cheese with white spots?
A: Yes, it is perfectly safe to eat cheddar cheese with white spots. However, some consumers may prefer to avoid it due to its appearance.

Q: How long can cheddar cheese with white spots be stored?
A: Cheddar cheese with white spots can be stored for the same amount of time as cheddar cheese without white spots.

Q: What causes the different types of white spotting in cheddar cheese?
A: Surface spotting is caused by temperature fluctuations, while interior spotting is caused by changes in pH levels.