3 tb Unsalted butter
4 oz Shiitake mushrooms;
- (or other wild mushrooms),
-  stems removed, sliced
4 oz White mushrooms
- stems removed, sliced
Salt
Freshly ground black pepper
2 tb Unsalted butter
1 tb Oil
1/3 c  Finely minced onion
1 1/2 c  Arborio rice
1/2 c  Dry white wine or broth
5 c  Broth
1/4 c  Mascarpone cheese
-=OR=- Whipping cream
-(or substitute skim milk)
1/4 c  Grated Parmesan cheese
1 tb Chopped parsley

You can substitute dried wild mushrooms for the shiitake. Just soak them
for 15-to-20 minutes beforehand (and be sure to add the strained soaking
liquid to the stock). HEAT BUTTER in small skillet over moderate heat. When
it begins to foam, add mushrooms and cook for 3-to-5 minutes, until soft.
Add salt and pepper to taste. Turn off heat and set aside. Bring the broth
to a steady simmer in a saucepan on top of the stove. Heat butter and oil
in heavy 4-quart casserole over moderate heat. Add onion, saute for 1-to-2
minutes, until it begins to soften, being careful not to brown. Add rice to
butter-oil-onion mixture. Using a wooden spoon, stir 1 minute, making sure
all grains are well coated. Add wine and stir until completely absorbed.
Add simmering broth, 1/2 cup at a time, stirring frequently. Wait until
each addition is almost completely absorbed (approximately 2 minutes)
before adding next 1/2 cup, reserving 1/4 cup to add at the end. Stir
often. After approximately 18 minutes (rice should be tender and firm), add
1/4 cup broth, mushrooms, Mascarpone and Parmesan cheeses and stir
vigorously so cheeses melt. Sprinkle with parsley. Serve immediately.