Morsel Of Kitchen Wisdom #25: It's Not Easy Being Green.

To avoid an unappetizing green rim around your yolk, prepare your hard-boiled eggs as follows:

Start with room-temperature eggs and place in pot or saucepan. Cover them with cold water, an inch above the tops. Bring the water to a boil, then immediately turn off the heat and cover. After 15 minutes, remove the eggs from the pans and run under cold water to stop the cooking and prevent discoloration.