Add all of the ingredients to a stockpot and cover with 1 ½ times the amount of water to mushrooms.
Bring the stock to a gentle boil and then reduce the heat and let simmer for 1 to 2 hours.
Taste the stock from time to time, once you have reached the desired flavor and the mushrooms have released all of their flavors, the stock is ready.
Strain the stock and taste for seasoning.
This stock will keep for several days in the refrigerator, or it can be frozen.
