Other Strange Things You Might Find in Eggs
The chalaza is the most common "weird" thing in an egg, but it's not the only one. Here are some other things you might spot and wonder about.
Blood spots (also called meat spots). These are small red or brown specks that appear in the egg yolk or white. They occur when a small blood vessel bursts during the egg's formation. They are completely safe to eat. If they bother you, you can remove them with the tip of a knife.
Cloudy egg white. A cloudy egg white is a sign of a very fresh egg. The carbon dioxide hasn't had time to escape through the shell membrane. As the egg ages, the white becomes clearer.
Double yolks. This happens when a hen releases two yolks at once, or when a single yolk divides. Double-yolk eggs are completely safe and considered lucky in some cultures.
Greenish or dark eggs. This is not a sign of spoilage. It's often due to the hen's diet or the presence of a rare pigment called oocyanin. The eggs are safe to eat.
A ring around the yolk after hard-boiling. This happens when eggs are overcooked. The greenish-gray ring is a chemical reaction between the iron in the yolk and the sulfur in the egg white. It's harmless but not very attractive.
What About Parasites in Eggs?
This is a common fear, and it's understandable. The idea of eating something that might contain a parasite is genuinely unsettling.
Here's the good news: eggs are remarkably safe.
The USDA and the FDA strictly regulate commercial eggs in the United States. All commercial eggs are washed, graded, and inspected. Parasites in eggs are extremely rare.
In the extremely unlikely event that a parasite were present, it would be killed by cooking. Eggs should always be cooked until both the white and the yolk are firm—not runny. This kills any potential bacteria and parasites.
The chalaza is not a parasite. It's not a worm. It's a structural protein. You can eat it without worry.
A Quick Word on Food Anxiety
I'm going to be honest here.
I have a tendency to overthink food. I see something strange, my brain goes to the worst-case scenario, and I spend twenty minutes spiraling instead of just eating my breakfast. It's a habit I'm trying to break.
The chalaza is a perfect example. I saw a white string and immediately thought "danger." I didn't stop to think about the fact that eggs are one of the most studied, tested, and regulated foods in the world. I didn't consider that maybe—just maybe—the thing I was looking at had a perfectly normal explanation.
If you're like me, I want you to know this: most things in your food are not dangerous. Most surprises have a simple, harmless explanation. The chalaza is one of them.
Frequently Asked Questions
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