Cut the mushrooms into thin slices. Chop the onion and fry in 1 tablespoon butter. Chop the garlic and add it. Fry for 5 minutes. Add the mushrooms and simmer briefly.
Add the flour, stir and fill up with the stock. After 5 minutes add the cooked spinach without the stock. Heat, but don`t stir too much so that the soup doesn`t turn green.
Stir in the wine and cream and heat. Season to taste with salt, pepper and curry and let the remaining butter melt in it.