The cooker comes with a measuring cup that is labeled not by actual measurements, but by egg firmness: soft, medium and hard. For hard-boiled eggs, simply load up your eggs (up to 12!) in the ...

How to Make Hard-Boiled Eggs: In a pan large enough to hold the eggs generously, boil enough water to cover the eggs. Add salt to the boiling water if desired. Gently slide in the eggs.