Creamy Chestnut Soup

8 Servings Ingredients 4 lb chestnuts (8 cups) fresh -whole,peeled 1 md onion 12 md shallots 4 stalks celery 5 oz prosciutto,Sliced 3 T butter 2 1/2 qt chicken stock,unsalted 1 t fennel seeds 1 bay leaf 1/2 t salt 1/2 c heavy cream 1/2 t white pepper,Fresh Ground 1/4 c cèpes (or porcini),Dried -mushrooms…