Instructions

  1. Place meat in a bowl with oyster sauce; stir to coat.
  2. let stand for 10 minutes.
  3. Soak mushrooms in warm water to cover until softened, about 15 minutes; drain, reserving 1/4 cup of the soaking liquid.
  4. Trim and discard stems.
  5. Chop caps.
  6. Place a wok over high heat until hot.
  7. Add cooking oil, swirling to coat sides.
  8. Add ginger and cook, stirring, until fragrant, about 10 seconds.
  9. Add meat, stir-fry until meat crumbled and no longer pink (1-3 minutes).
  10. Add carrot, zucchini, and water chestnuts; stir-fry for 30 seconds.
  11. Add mushrooms and reserved mushroom soaking liquid.
  12. Cook until vegetables are crisp-tender, about 2 minutes.
  13. Add sherry/wine and sesame oil; cook until heated through.
  14. If using, add walnuts and toss to coat.
  15. To eat, spread hoisin sauce on a lettuce cup, spoon in meat filling, wrap in lettuce cup, and eat out of hand.
  16. For spicier palates, top with Asian chili sauce.