I just love cauliflower soup, but I'm easily pleased! lol!
I boil my cauli in some chicken stock with some garlic and then stick it in the blender when I'm done.
Sometimes I saute a leek and garlic in butter before I add the cauli and stock.
But I Only use enough water to cover the veg because I dont want it too runny, and I'm not a fan of cream soup.