Seems so easy right?
I use to just put my eggs in boiling water, and then wait… when I thought they were done, I'd wait a little longer just to make sure.
I always had the grey ring around my yolk and never thought anything of it until I was watching some cooking show and noticed they never had the grey ring around the yolk.
so, to make the perfect (and pretty) hardboiled egg:
lower egg into boiling water
wait 5 minutes
turn off heat
let egg sit in hot water for 10-15 minutes
Perfect hard boiled egg. It IS easy!