hard boiled eggs

When I use to make hard boiled eggs, I always would get that green outline around the yolk... I tried this method and now I never get overdone, tough eggs. 

1. Put your cold eggs into a pot.

2. Run cold water until the eggs are covered.

3. Put on a burner and set to medium heat.

4. When they start to boil, turn off the heat and put a lid on the pot.

5. Let them sit for 15 minutes.

6. Uncover, run under cold water and peel!