- 2 tablespoons vegetable oil
- 1 tablespoon finely chopped peeled fresh ginger
- 1/2 teaspoon salt
- 2 scallions, chopped (1/4 cup)
- 2 skinless boneless chicken breast halves (about 1 lb total), cut into 1/2-inch pieces
- 1 (8-oz) can sliced water chestnuts, rinsed and coarsely chopped
- 1/4 cup bottled hoisin sauce (preferably Lee Kum Kee, House of Tsang, or Koon Chun brand)
- 1 1/2 teaspoons Worcestershire sauce
- 1 teaspoon rice vinegar (not seasoned)
- 1/2 cup pine nuts (2 1/2 oz)
- 12 large red- or green-leaf lettuce leaves
- Heat a wok or a 12-inch heavy skillet (not nonstick) over moderately high heat until just smoking, then add oil. Add ginger, salt, and 2 tablespoons scallions and stir-fry until ginger is fragrant, about 45 seconds. Add chicken and stir-fry until just cooked through, about 2 minutes. Add water chestnuts, hoisin sauce, Worcestershire sauce, vinegar, and pine nuts and stir-fry until heated through, about 1 minute. Transfer to a bowl and sprinkle with remaining 2 tablespoons scallions.
- Have guests serve themselves by spooning chicken mixture into lettuce leaves and wrapping leaves around filling to enclose.