1, hard-boiled eggs can be cooked in cold water or boiling water.

2, according to the experiment, no matter hot water boiling or cold water boiling, in the boiling state to keep 3~5 minutes, so that the boiled eggs out of the state is more ideal.

3, some foreign boiled eggs will be labeled "5" or "3", which refers to the eggs boiled for 5 minutes or 3 minutes. If you use a qualified egg cooker, as long as the amount of water is appropriate, you can also cook this ideal state of the egg.