20g butter
1 chopped onion
1 chopped clove garlic (I use puree)
4 potatoes, about 250-350g chopped
350g roughly chopped mixed mushrooms
150 ml white wine or dry cider
1.2 litres chicken stock
salt & ground pepper
Sour cream and parsley to garnish
Heat the butter and add onion, covering to make sure it's well coated. Add potato, cover and sweat over a low heat for 5-10 minutes until soft but not browned.
Add the mushrooms, garlic and wine/cider and stock. Season, bring to the boil and cook for 15 minutes until all ingredients are tender.
Put the mixture through a mouli legume or blend, bring back to the boil and season/garnish.
I made the mistake of using open cup mushrooms so it's rather dark but is satisfyingly mushroomy and full of vit D. Comes from a book called 400 Best Ever Soups that I picked up in a charity shop.