Why is Shell sticking to hard boiled eggs?
Photo Credit: Courtesy of 3DStockPhoto (boiled eggs image)
Fine Cooking says this is because the albumen, or the egg white, will stick to the shell of a fresher egg, but as the egg ages, it doesn't stick as much to the shell. When the water with baking soda passes through the eggshell, it helps the albumen to separate from the shell.