The rooster PiepEi plays three different melodies for three degrees of hardness: OLD MACDONALD - for wimps MY GRANDMA RIDES A MOTORCYCLE IN THE HENHOUSE - for medium-soft eggs THE ROOSTER IS DEAD - for hard eggs On Sunday mornings, people don't plow on the farm, but breakfast is served. The perfect egg should not be missing. Too soft, too hard — but never to the point. Perfectly cooked eggs are a science in themselves. But no problem for the rooster PiepEi. Simply store with the eggs, cook them together with the eggs and wait for the rooster to sing a peep egg. No matter what water temperature you start with and no matter what height you cook at, the egg will be perfect.