The trick to boiling eggs is simple:
Turn off the burner when the water boils.
No one wants an ugly GREY ring around the yolk!
Simply place your eggs into a pan, cover with cold water, place lid on pan and bring water to a boil.
As soon as the water reaches a full boil, turn the heat off. Leave the lid on the pan. The heat of the water and the remaining warmth from the burner will be enough to finish cooking your eggs. Depending on how hard or soft you like your eggs, you can leave them like this for about 3-20 minutes:For soft-boiled, remove them from the water in three minutes or less. The whites should be set, while the yolks should be runny and warm.
For medium-boiled, remove them from the water in 5-7 minutes. The yolks should be semi-soft in the very center and the whites should be very firm.
For hard-boiled, leave the eggs in the hot water for up to 10-15 minutes. The yolks should be firm all the way through. It's difficult to overcook eggs this way.
This has to be the easiest breakfast food to prepare!