Mark Bittman's Mushroom Stock

• 1 pound button mushrooms, trimmed
• 3 dried porcini
• Some onion, carrot or celery (optional)

1. Toss a pound of trimmed button mushrooms and a few dried porcini into 6 cups water.
2. It need not be more complicated than this, but adding some onion, carrot or celery makes it even better.
3. Bring to a boil, and simmer.
4. Strain the mushrooms out if you like, but make sure to use them for something.

mushrooms, porcini, onion

Taken from cooking.nytimes.com/recipes/1017137 (may not work)