Make sure the water is deep enough to cover the egg well. Place eggs into gently simmering water, to help prevent eggs cracking they are best cooked from room temperature, rather than being taken from the fridge. An egg at room temperature will take 3-4 minutes for a runny yolk, 6-7 for soft boiled, and 10 minutes for hard boiled yolk. Hard-boiled eggs should be drained and immersed in cold water to stop the cooking process and avoid a dark ring around the yolk. Very fresh eggs are hard to peel, as the membrane clings to the shell. Running the shells under a cold tap should allow you to peel the egg more easily.