Creamy Mushroom Rice
["1/3 oz. dried porcini mushrooms", "4 oz. butter", "1 small onion, finely chopped", "2 2/3 cup arborio rice", "6 cup beef or chicken stock, de-fatted", "Parmesan cheese"]
["Crumble the mushrooms and soak them in warm water for 30 minutes.", "Drain well and reserve mushroom water."]
["porcini mushrooms", "butter", "onion", "arborio rice", "beef", "Parmesan cheese"]