The two twisted white strings attached to an egg yolk are called the chalazae.
Chalazae act as built-in shock absorbers that suspend the yolk safely in the center of the shell.
Contrary to popular myths, the chalaza is not an umbilical cord or a sign of a fertilized egg.
The chalaza is made of pure protein and is completely safe, natural, and tasteless to eat.
A thick, prominent chalaza is actually nature’s indicator that your egg is exceptionally fresh.
As an egg ages in the refrigerator, its chalazae naturally weaken and eventually dissolve into the white.
For everyday cooking like scrambling or baking, you can leave the chalaza in without noticing any difference.
When making silky desserts like custards or lemon curds, removing or straining out the chalaza ensures a smooth texture.
Because chalaza proteins are firmer than the surrounding egg white, fine-mesh strainers easily catch them during baking prep.
Appreciating the chalaza reveals how brilliant natural engineering works to protect food and indicate freshness.
