Method:
Place sherry, rice wine vinegar, shoyu sauce, ginger, brown sugar, star anise, cinnamon sticks, half of the orange zest, cabbage and water in a casserole or Dutch oven that will comfortably fit all of the chicken. Bring to a boil, then cover, reduce heat to medium and cook for about 8 minutes. Meanwhile, sprinkle both sides of chicken lightly with five-spice powder. Set aside.
Once liquid is slightly reduced and fragrant, add garlic and chicken. Cover and cook for 15 minutes. Turn thighs and continue cooking for another 15 minutes. When chicken is fully cooked, uncover and stir in the remaining orange zest. Remove from heat. Discard star anise, cinnamon sticks and large pieces of ginger. Serve chicken immediately, spooning cabbage and sauce with it.