Asparagus Soup

So, we bought asparagus from the grocery store today. Harish told me that asparagus is used for soups. Since I had no idea how to make the soup, I search the internet for a recipe. The first two hits in google gave me recipes that invariably required something with meat in it. Then we got this link.
http://allrecipes.com/Recipe/Fresh-Asparagus-Soup/Detail.aspx
The recipe has got rave reviews, so thought will try it out. We did not have vegetable broth and we had red onions instead of yellow onions. So we did make some change to the original recipe. This is the modified recipe.

1. Asparagus spears (one bunch)
2. Red Onion - 1
3. Yogurt - one cup (4-5 table spoons)
4. Salt and Pepper
5. One table spoon of vegetable oil.
6. Two table spoon of rice flour or all purpose flour.
7. Two table spoon of lemon juice.
7. Blender

All quantities are approximate. If you find something is less, add more of that ;-). If you think something is more, put in more water ;-).

Put the oil in a pan and as the oil heats up, put in the onion and wait till the onion turns light brown. Next put in the asparagus and let it cook for about a minute. Dont let the asparagus become brown. Then put in a 2 cups of water, salt and pepper according to taste and the flour. Let the mixture cook till the asparagus is cooked. Then in a blender, put in the yogurt and add cooked vegetables into the blender. Blend till you get a nice smooth thick mixture. Add the lemon juice at the end. Enjoy ;-).