Ingredients

  • 3 tablespoons butter, unsalted
  • 2 tablespoons olive oil
  • 3/4 cups shallots finely chopped
  • 2 pounds mushrooms white, thinly sliced
  • 1 teaspoon thyme fresh
  • salt and black pepper freshly ground
  • 13 cup cream sherry
  • 3 tablespoons flour, all-purpose
  • 3 1/2 cups chicken broth, low salt reserving 1/2 cup
  • 1/2 cup milk
  • 1/4 teaspoon nutmeg to taste
  • 1/2 cup sour cream

Method

  • In a large saucepan melt butter with the olive oil over moderate heat.
  • Add the shallots and cook until tender, about 2 to 3 minutes.
  • Add the sliced mushrooms, thyme leaves, salt and pepper, cooking until all of the liquid rendered from the mushrooms evap orates.
  • Add the Sherry and cook until evaporated.
  • Remove a 1/2 cup of the cooked mushrooms and reserve.
  • Stir in the flour and cook for 2 to 3 minutes.
  • Add 3 cups of the chicken broth, bring to a simmer and cook for 15 minutes.
  • In a blender puree the soup in batches until smooth.
  • For a very smooth soup, pass through a fine sieve.
  • Return soup to saucepan, bring to a simmer and whisk in the milk.
  • Add reserved chicken broth to achieve desired consistency.
  • Adjust seasoning with salt, pepper and nutmeg.
  • Lower heat and whisk in 1/4 cup of the sour cream.
  • Keep soup warm but do not simmer or boil.
  • Serve soup garnished with reserved cooked mushrooms and a dollop of the remaining sour cream.