The amount of eggs is up to you but I normally make batches of hard boiled eggs that will fit in a single layer in the pot at a time.
Place room temperature eggs in a pot and cover with cold water to about 1 inch above the eggs. Place on high heat.
When the water starts to boil, jiggling the eggs around, also called a rolling boil, continue to boil for 1 minute, then turn off the heat, leave on the same burner, and cover for 19 minutes without lifting the lid. If you have very large duck eggs, leave covered for 21 minutes.
At the 19 minute mark, drain the water then put the pot under the tap (on the edge of the sink so it can drain, or in the sink) and turn on the tap and let it run for about 5 minutes to cool the eggs.
Now turn off the water and let the eggs sit in the water for about 15-20 minutes. To peel the eggs, first hold an egg pointy end upwards, and tap the lower end on the counter, then tap the egg all over, start to peel from the flatter end, where you tapped first. I cooked 6 eggs to test this, each one perfect, peeled easily, yolk prefect consistency.