This amazing egg timer will give you perfect boiled eggs time after time. Just place the egg shaped timer in the pan with your eggs and start boiling the water as usual. The timer egg works like an X-ray egg as you can see the cooking progression via the colour changing indicator. This happens at exactly the same rate as the real eggs are cooking next to it. So you can see what stage your eggs are at at any given time in the cooking process. The stages are clearly marked in text to correspond to the colour changing indicator for soft, medium and hard boiled results. Can be used over and over and over again.