<human>:  How can I make the perfect hard boiled egg?
<bot>: To make the perfect hard boiled egg, start by filling a pot with enough cold water to cover the eggs. Add a tablespoon of vinegar or a teaspoon of salt to the water. Heat the water on medium-high until it reaches a rolling boil, then add your eggs carefully. Let the eggs boil for about 10 minutes for medium-sized eggs. Remove the eggs from the boiling water and place them in an ice bath to stop the cooking. Peel the eggs, then serve them as desired. Enjoy!