This is a pared-down version of san choy bau that is really easy to make but still very tasty. I like to serve mine with sesame noodles (one of my gf's favorites).
- Heat the oil in a wok or frying pan. Add chicken and garlic and stir-fry for 3-4 minutes, making sure to use a wooden spoon to break up any lumpy bits that form.
- Reduce the heat and drain any excess liquid, then add all of the remaining ingredients except the lettuce leaves.
- Trim the lettuce leaves to form a cup shape and divide the chicken mixture among them. Top with additional oyster sauce, to taste, if desired, and serve hot (with rice or, ideally, sesame noodles).