Add the onion, garlic and leeks and saute for 2-3 mins. Add the celery and asparagus, and cook for 3-4 minutes, stirring constantly so it doesn't stick to the pot. Add a little more stock in if you need to.

Add in the rest of the Vegetable stock and bring the mix to a boil, then immediately reduce the heat, cover and allow to simmer for about 25-30 minutes. Give it a stir every once in a while.

Let the soup cool some and then either use a hand stick blender or a full blender and blend in batches till you get the consistency you prefer. I don't like mine too smooth so I only blend about half of it.

Add the blended soup back to the pot and bring back to a simmer. Then you're ready to serve.

You can season in the pot but I actually prefer to season with Salt & Pepper as I serve it up as the seasoning is more noticeable and brings out the flavours. So I leave that up to you.