Cauliflour soup

I really need to take more pictures of this delicious food for you to see but we just gobble it up to quick!
I'd be wanting to make some cauliflower soup for a long time because a guy I used to work with talked about how excited he was to go back to Wisconsin for Christmas to have it. Apparently it's another thing Wisconsin is famous for....and here I thought it was all about cheese, beer and Green Bay.
Anyway here's the recipe. It was smooth and creamy and delicious. We ate it with whole wheat salteens (which taste the same as regular salteens by the way) but it would be even better with a loaf of sour dough or french bread to dip it in. Yumm...

1 head cauliflower

2 tablespoons extra-virgin olive oil

1 onion, chopped

2 cloves garlic, minced

1 quart low-sodium chicken stock

1 Tbsp parsley

1/3 cup milk

Salt (1tsp?) and Pepper (2tsp?)

Optional additions 3-4 sticks of celery (i didnt have any in the fridge so i left this out), water to help with softening the veggies and thining the soup (if you use too much water just add some cornstarch mixed in cold water to thicken it back up), and 1/3 cup Parmesan cheese (not my favorite kind of cheese so i dont keep it in the house either)

Remove the leaves and thick core from the cauliflower the chop coarsely.
Heat the olive oil in a large saucepan or soup pot over medium heat and add the onion and garlic. Cook until softened, but not browned, about 5 minutes.
Add the cauliflower and stock and bring to a boil. Reduce the heat to a simmer, cover, and cook until the cauliflower is very soft and falling apart, about 15 minutes.
Remove from heat and, using whatever blender you have (immersion or standard), puree the soup and return it to the pot.
Season, to taste, with salt and black pepper and parsley Add  milk (and cheese) Keep warm until ready to serve.