With a meat clever, chop the chicken through the bone, into 2-inch pieces, or disjoint into several pieces. In a small saucepan, combine the chicken broth, 1/2 cup water, soy sauce, and rock sugar. Bring to a simmer over medium heat and cook until the sugar is completely dissolved, about 5 minutes. Set aside. Heat a 14-inch skillet over high heat until hot but not smoking. Add oil and ginger, and stir-fry until ginger is lightly browned, about 1 minute. Bring ginger to the sides of the skillet. Reduce heat to medium, and carefully add the chicken, skin side down, spreading it in the skillet. Cook, undisturbed, 3 to 4 minutes, adjusting heat between medium-high to let the chicken brown. Then, using a metal spatula , turn the chicken over and pan-fry 3 to 4 minutes, or until chicken is browned on the other side, but not cooked through. Pour off any excess fat, redistribute the ginger, and sprinkle the chicken with salt. Quickly drizzle chicken broth mixture down the sides of skillet, and immediately cover. Cook, covered, on medium heat 4 minutes. Turn the chicken, reduce heat to low, and cook 3 to 4 minutes, or until chicken is cooked through. Serve immediately.;
Recipe courtesy of Grace Young, "The Wisdom of the Chinese Kitchen"