eggs are boiled after cold water is put in.

put the eggs in cold water, bring the water to a boil, and turn to low heat. Generally, the eggs are tender for 1 minute, medium-boiled for 3-5 minutes, and hard-boiled for 1 minutes. Boiled eggs: Take the eggs out of the refrigerator one hour in advance and put them at room temperature, or put them in warm water for five minutes, drain and serve.