A bit late, but Hungarian Mushroom Soup is incredible.
Cant remember the exact ingredient amounts off the top of my head, but it's supposed to be fairly rustic anyway
Fry onions, a little bit of garlic and LOTS of mushrooms in butter until tender.
Add a few teaspoons of sweet or smoked paprika (what ever your taste) and cook off for a minute or so
Add enough veg stock to cover the mushrooms.
The add equal parts heavy cream and sour cream.
Season to taste with salt/pepper pepper.
Garnish with chopped chives or fresh parsley.
A proper warming, but not to heavy winter soup!