Spin the egg on a flat surface; a hard-boiled egg spins smoothly, while a raw or undercooked egg wobbles
Remove one egg and peel a small section to check the yolk and white
Cut the egg in half; the yolk should be set to your desired firmness
Gently shake the egg; a fully cooked egg feels solid inside
Use a timer based on your preferred doneness
Check the shell for any signs of cracking during boiling
Place the egg in cold water after boiling to stop the cooking process
If the egg is still warm and the yolk feels runny when peeled, boil it longer