Add all of the ingredients into a pot, and allow them to come up to a boil. Turn off the stove, and allow to steep for a an hour or two. Return the pot to a boil, and then allow the liquid to reduce to two cups. Strain with a fine mesh strainer, reserving the deliciously flavorful and textured mushrooms. Store in the fridge until ready to use. Note: if you over-reduce, just add a bit more water until it reaches 2 cups.