Zupa Grzybowy (Mushroom soup)

This very traditional hearty Polish soup is a recipe I have eaten and cooked many times. This is also acceptable for Wigilia (Christmas Eve) because it is a vegetarian recipe. This recipe has several ingredients but is well worth it. You will leave people asking for more. Quite tasty and very nutritious. Recipe: 3 cups Wild mushrooms (Fresh or dried) 1 onion 2 tablespoons of vegetable oil 2 tablespoon of butter 2 carrots 1 parsnip 5 potatoes 2 liters of broth, veg & mushroom 2 tablespoons of fresh chopped dill 2 tbl fresh parsley 2 Bay leaves ½ tsp ground allspice ½ cup sour cream 6oz. heavy cream salt and pepper