Choosing Chicken Eggs
The breed of the chicken is what determines the color of the egg. White eggs aren’t bleached. In fact, all eggs start as white inside the chicken. It takes over 24 hours for an egg to fully form within the hen’s reproductive system, and only during the last step of the process does a pigment deposit on the egg to determine its final color. The pigment pro-toporphyrin is responsible for the brown color, and it’s more or less “painted” on the outside of the white shell late in the shell’s formation. That’s why brown eggs are only brown on the outside of the shell but white on the interior.
In the case of white eggs, no pigment is added at the end, because that particular
