When cooking eggs it's always difficult to gauge how well cooked they are, whether you like a runny egg or hard boiled egg you'll always get the one you want with the Colour Changing Egg Timer. This practical timer can be placed in the water with the eggs, offering a colour changing function that will tell you how much the egg has been cooked. Simply stop cooking once the line has reached your desired marker. This nifty gadget will give you perfectly cooked eggs every time.