Place all of the ingredients except the mushrooms in a large pot; bring to a boil, reduce heat, and simmer for 10 to 15 minutes.
Add the mushrooms to the pot, stirring to coat.
Remove the pot from the heat and let cool to room temperature, about 1 hour.
Refrigerate for at least 2 hours, preferably overnight.
mushrooms I'm warning you, these marinated mushrooms are addictive. Serve them as part of a Thai antipasto, as a side dish for grilled meats, or as a super snack.