You will need some eggs (duh) - however many eggs you need and can comfortably fit on the bottom of a saucepan, and a kitchen timer or stop watch for this. Precision in timing is key to runny yolks. I like to cook around 6 of these at a time and keep them in the fridge to top salads, add to laksa or simply snack on. Please note that for induction cooktops you may need to extend cooking time by 30 seconds.