That white, twisty, slightly opaque strand is called the chalaza (pronounced kuh-LAY-zuh). Plural: chalazae.
It’s a natural protein structure that holds the yolk in the center of the egg. Think of it as an internal suspension system—a set of tiny ropes that anchor the yolk to the membrane of the eggshell. It keeps the yolk from bouncing around and rupturing.Egg Whites
The chalazae are made of the same protein (keratin) as egg white. They are completely edible, completely safe, and actually a sign of a fresh, high-quality egg.
In fresh eggs, the chalazae are thick and prominent. As eggs age, the chalazae dissolve and become less visible. So if you see a prominent white strand in your egg, congratulations—you’re eating a fresh egg.
The word “chalaza” comes from the Greek word for “hailstone,” referring to the way the strand looks like a small, white pebble suspended in the white.
Why You Probably Never Noticed It Before
If this was the first time you noticed a chalaza, you’re not alone. Many people never notice them because:Order Meal Kits
