Perfect Boiled Eggs

Everytime I've ever made boiled eggs, they've always ended up with that green ring around the yolks (which is harmless but doesn't look the greatest especially for deviled eggs). I didn't know there was a way to avoid that. I clipped these directions out of a magazine (can't remember which one) and following these directions made absolutely perfectly boiled eggs!

For perfect hard-boiled eggs, place the eggs in a single layer in a saucepan, then add cold water to cover eggs by 1 inch. Bring to a boil over high heat. Remove immediately from heat, cover and let stand for 15 minutes. Using a slotted spoon, transfer eggs to a bath of ice cold water (I added tons of ice cubes) and let them sit for 5 minutes.