1, duck eggs if it is cooked with boiling water, cooking about 8 minutes can be. It is best not to exceed 8 minutes, if more than 8 minutes, the nutrients of the egg will appear a certain outflow. It is also important not to cook for less than 6 minutes. If it is less than 6 minutes, there may be some parasites inside that are not good for the body.
2, if it is cold water cooking, it will be a little longer, about 15 minutes. If you like to eat half-cooked runny egg yolks, boil them in boiling water for 7 minutes and cook them in cold water for 10 minutes.