Can please tell me how long it takes to boil an egg so that yolk is still runny?
It varies depending on the size of the egg, but as a general rule, you should wait until the water comes to a rolling boil and then remove the pot from the heat. It's important not to let the eggs cook too quickly or they may overcook and become tough. Additionally, if you leave the eggs in the boiling water for longer than recommended, they can start to break apart and become unpleasantly chewy.