1. heat a wok on high heat.
  2. in a bowl, coat mushrooms with corn starch.
  3. add peanut oil and mushrooms to wok. cook until mushrooms are lightly crispy.
  4. set aside mushrooms and lower heat. wipe down wok with a paper towel. let wok cool for 1 minute.
  5. add sesame oil to wok then add garlic and ginger. when aroma is released, add brown sugar and melt it.
  6. add soy sauce, rice vinegar, corn starch, and sriracha, and mix well.
  7. add mushrooms back to pan and mix to coat with the sauce.
  8. optionally, add vegetables like onions and bell peppers.
  9. serve with rice