Place the eggs in a saucepan and cover with cold water.
Bring to the boil, then reduce the heat to a gentle simmer
for 3-7 minutes, depending on how you like your eggs cooked.
After 3 minutes they will be really soft and after 5 minutes
both the white and the yolk will be set.
* 3 mins - really soft boiled yolk and set white
* 4 mins - slightly set yolk and set white
* 5 mins - firmer yolk and white
* 6 mins - hard boiled with lightly soft yolk
* 7 mins - firmly hard boiled