Here is a step-by-step recipe for how to hard boil an egg.
1. Place eggs in a single layer in a pot.
2. Cover eggs with cold water, filling the pot about 1 inch above the eggs. (Cold water prevents overcooking the eggs - no one likes overcooked hardboiled eggs!)
3. Add about 1 teaspoon of salt, which makes it easier to peel the shell off hardboiled eggs.
4. Put the covered pot on high heat and bring to a boil.
5. As soon as the water comes to a boil, turn off the heat and leave the eggs in the covered pot on the burner.
6. Leave the eggs in the covered pot for about 10 to 15 minutes.
7. Once your eggs are done, stop the cooking process immediately by placing eggs in a bowl of ice water.
8. Let the eggs cool completely. Then they are ready to eat or to be stored in the fridge.
Notes for How to Make the Perfect Hardboiled Egg:
Ever wonder how to prevent the egg yolk from turning green? Don't overcook the eggs.
It's best to test one egg after 10 minutes. Also, make sure to promptly cool your hardboiled eggs to prevent overcooking.
Ever wonder how to peel a hardboiled egg without making a mess? Crack the egg lightly in a ring. Then run the egg under cold water while you peel it. Fresher eggs are sometimes harder to peel, so it's best to use eggs that you have had for a few days.
Ever wonder how long hardboiled eggs stay good? Keep them refrigerated and they should last about 1 week.