How to Make It
Cut chicken into 12 (3 inch x 6 inch) thin slices. Combine chicken and marinade ingredients in a bowl; stir to coat. Let stand for 10 minutes. Diagonally cut Chinese sausage into thin slices; cut each slice into matchstick pieces; set aside.
Place a few pieces of Chinese sausage, black and enoki mushrooms, and carrot, on the short edge of each chicken slice. Roll the chicken around the filling and secure with a toothpick. Place the chicken pillows on a heatproof dish.
Place a steaming rack in a wok, add water to just below the level of the rack, and bring to a boil. Place the dish on the rack; cover and steam until the chicken is done, about 10 to 15 minutes. Remove the dish from the wok; carefully pour off the cooking juices.
Combine sauce ingredients in a saucepan; bring to a boil over medium heat. Add cornstarch solution; cook until sauce thickens. Pour sauce over chicken rolls. Serve.