Egg Perfect Colour Changing Boiled Egg Timer 5 "Useful little tool" Mrs Hodge 22 July 2017 It seems to be an art to get the perfect boiled egg. This has saved us the guess work and remembering to set a timer. I wouldn't be without one now. The only difference is starting your eggs to boil from cold. I've had mine for a good 5 years and it's still going strong.