Dpn't use alot of pepper! Dpn't use alot of pepper!
The best way is by diluting the soup with water, stock or by the addition of cream or yoghurt.
The easiest method is generally to dilute the dish with additional amounts of existing ingredients. At the question linked below, this question is asked about chili and there are a lot of good...
Try and add creme fresh than numbs the spicy curry without getting rid of the texture or flavour
add teaspoons of surgar, the ammount will change based on the ammount of sause