2 to 3 tablespoons soy sauce, divided
2 tablespoons dry sherry, divided
3 teaspoons sesame oil, divided
2 teaspoons brown sugar, divided
1 1/2 pounds skinless boneless chicken breast, cut crosswise into thin strips
1 can straw mushrooms, drained
3 tablespoons peanut oil
4 to 6 green onions, chopped, white and green parts separated
2 teaspoons chopped seeded serrano chiles, or dried chili flakes to taste
1 large bunch greens, thick stems removed, cut into 1 inch strips crosswise, about 10 cups packed
1/4 to 1/2 cup chopped roasted salted peanuts
Whisk 1 tablespoon soy sauce, 1 tablespoon sherry, 1 teaspoon sesame oil and 1 teaspoon sugar in small bowl. Add chicken; marinade for 30 minutes.
Whisk the remaining 1 tablespoon soy sauce, 1 tablespoon sherry, 2 teaspoons sesame oil, and 1 teaspoon sugar in small bowl and reserve.
Heat 2 tablespoons oil in large non stick skillet over high heat. add white parts of green onions, and chile; stir 30 seconds. Add chicken, and stir fry just until cooked through, about 3 minmutes. Transfer chicken mixture to bowl.
Add 1 tablespoon oil to skillet, heat over high heat. add greens by large handfuls; stir until just beginning to wilt before adding more. Saute until tender, 1 to 6 minutes, depending on the type of greens.
Return chicken to skillet. Add reserved soy sauce mixture and stir until heated through. Season with pepper; sprinkle with peanuts and green onions and serve over rice.