Maybe ham, but no green eggs
Why do Boiled Eggs Turn Green?
The discoloration that sometimes forms around the yolk of hard-boiled eggs is the result of a chemical reaction between sulfur in the whites and iron in the yolks. It is harmless. It occurs when eggs have been cooked for too long or at too high a temperature.
Cooking eggs in hot, not boiling, water, and then cooling immediately – minimizes this.
