Bring water to a rolling boil before adding the eggs - This helps get a consistent cook time for the eggs. Have enough water to fully submerge the eggs - It’s important to have at least 3 inches of water so that the whole egg is submerged in water in order to guarantee that the egg cooks through properly. Gently lower the eggs with a slotted spoon. Gently lowering the eggs into the boiling water ensures that the eggs don’t crack when added into the pot. Choose cook time based on preference. Cooking the eggs in boiling water for 6 minutes leads to runny egg yolk, 7-8 minutes results in eggs that are set but are jammy, and 9 minutes or more results in eggs that are hard boiled.