What is the best way to: How to thin a soup that is too thick?

Pick your answer from:
+ Remove some of the soup mixture and add equal parts water or stock to that mixture, let it mix and then pour it back into the soup on a low temperature.
+ Remove some of the soup mix and add double that amount of water or stock to that mixture, let it mix and then pour it back into the soup on a boil.
Answer:
Remove some of the soup mixture and add equal parts water or stock to that mixture, let it mix and then pour it back into the soup on a low temperature