The Terrace Restaurant Chester County Mushroom Soup

Submitted to Recipe Goldmine by Lois Brenneman

Recipe courtesy The Terrace Restaurant, Kennett Square

1 carrot
1/2 onion
2 stalks celery
1 tablespoon butter or oil, plus 2 tablespoons
    melted butter or oil
2 pounds washed button mushrooms
1/2 pound washed shiitake mushrooms
1/2 pound washed oyster mushrooms
1 tablespoon fresh chopped tarragon
1 teaspoon salt
1 teaspoon white pepper
3 pints chicken or vegetable stock
1 pint heavy cream
2 tablespoons flour

Mince carrots, onions, and celery in a food processor and saut