However, eggs that develop a green ring on the hard-cooked yolk after cooking are safe to eat, according to the USDA. They should discard eggs with any unusual discoloration inside, such as a pink, iridescent, or greenish egg white or yolk.
If the shell is intact with no obvious signs of damage, contamination, or foul odor, a person should do a second visual check after cracking the egg open. People should discard eggs with any of the following characteristics:Įggs with cracked or slimy shells may have become contaminated with bacteria, while a powdery substance on the shell can be a sign of mold.
A person should check for signs of possible contamination or rottenness.