My husband LOVED this soup, though he's definitely not a vegetarian! It is very refreshing. I know I'd like it. as I like ANYTHING tomato. I knew the tomato/yogurt combo would work as well as my other all-time summertime favorite, tomato and cheese sandwiches does. I did, however, have some misgivings about the yogurt/chile combo. It too, meshes well in the dish. I live in New Mexico, where chile is practically a religion. One could easily substitute green chile, jalapeno, red chile, chipotle, or any other chile variety in this recipe with equally amazing results! I dislike cilantro, so I substituted that part of the recipe with Italian flat leaf parsley. As for the chili powder and cumin in the recipe, I found them to be absolutely necessary. They leant a nice depth of flavor to the soup. You could substitute curry, if you wish, but these two spices worked nicely. Given the tomato/yogurt canvas, one could use this to create all sorts of exciting dishes!
I have made this raita many a times with a little difference.
I have also added finely chopped onions.
It tastes very good.
Like I mentioned in the very first para of this post - you can serve it with any pilafs (spicier the better), as a side to rotis and dals etc--DK