Cold Avocado And Buttermilk Soup

One of my recent cookbook acquisitions is World Vegetarian by Madhur Jaffrey, which has some 650+ recipes from around the world.
With the hot weather we've been experiencing over the last couple of days, it seemed like the perfect time to make something light and refreshing. I flipped through the pages of my new cookbook and came across her recipe for a soup that did not require any cooking. Just the thing I was looking for!

Here's my version of the recipe.

For 3 servings
Ingredients:
2 cups buttermilk
3 green chillies, chopped
½ - 1 tsp freshly grated ginger paste
Juice of a lemon
1 tsp cumin seeds
1/2 tsp cumin powder (prepared by dry roasting cumin seeds and grinding it using a mortar& pestle)
1 ripe avocado, chopped
Salt
Chives (for garnishing)

Method:
Throw all the ingredients together in the blender and process until smooth. Chill and serve.

We had this tangy soup along with a bean salad.