Boiling an egg sounds like the simplest of tasks, but even cooking experts disagree on the best method. This technique is practically foolproof--follow it, and you'll never end up with green-tinged eggs again.
Gently place the egg in a saucepan. You can boil more than one egg at once, just be sure to set the eggs in a single layer.
Add cold water to the saucepan until the water is 1 inch above the egg.
Place the saucepan on a stove and bring the water to a full rolling boil. Don't go too far, it shouldn't take long.
Remove from heat and let stand for 10 minutes. Set a timer to help you keep track.
Transfer the egg from the pan to an ice bath and let it sit for 5 minutes. This will stop the cooking process so you don't end up with a tough egg.
Let the egg cool before handling. Pat the egg dry and use as desired.