The World'S Greatest Mushroom Soup
["3 c. button mushrooms, washed", "2 c. onions, finely chopped", "3 Tbsp. butter", "1/4 c. flour", "5 c. chicken stock or broth", "3 Tbsp. Worcestershire sauce (optional)", "1 bay leaf", "1 tsp. chopped, fresh tarragon", "salt and freshly ground pepper to taste", "chopped parsley to garnish", "1 1/4 c. cream (optional)"]
["Slice mushroom caps thinly.", "Chop mushroom stalks finely. Soften chopped onions in butter with the chopped mushroom stalks. Add flour and cook for 1 to 2 minutes.", "Gradually add the chicken stock and bring to a boil.", "Then add the sliced mushroom caps, bay leaf, tarragon and Worcestershire sauce.", "Add salt and pepper to taste and simmer from 15 to 20 minutes.", "Remove bay leaf and adjust seasonings.", "Serve, garnished with a few slices of mushrooms and chopped parsley."]
["button mushrooms", "onions", "butter", "flour", "chicken", "Worcestershire sauce", "bay leaf", "tarragon", "salt", "parsley", "cream"]