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Depending on how cooked you like your hard boiled eggs, the eggs should be done perfectly in 10-12 minutes. That said, depending on your altitude, the shape of the pan, the size of the eggs, the ratio of water to eggs, it can take a few minutes more.eat the pot on high heat and bring the water to a full rolling boil. Adding a teaspoon of vinegar to the water may help keep egg whites from running out if an egg does crack while cooking. Also some people find adding 1/2 teaspoon of salt to the water helps prevent cracking as well as making the eggs easier to peel.
Many people feel that eggs should not be hard boiled, only hard cooked. Put the eggs in hot water for 5 minutes while you bring a pot of water to a simmer. Put the eggs in the simmering water and let them simmer for 20 minutes. If you add a splash of vinegar to the water, it will make the eggs easier to peel.ut your eggs in a pan, add cold water to cover by 1 inch plus 1 Tb of vinegar or salt (this will keep the egg from running if the shell cracks a bit during the process). bring to a boil, boil for 10 minutes. remove the pan from the heat, let rest for 5 minutes. the eggs will be perfectly hard boiled.