Step 1 Place the bok choy in the top of a steamer basket over simmering water. Cover and steam the bok choy until tender, about 10 minutes.
Step 2 Measure the soy sauce, chicken broth, rice vinegar, oyster sauce, sugar and sesame oil into a measuring cup. Set aside.
Step 3Cook the garlic and ginger in a small skillet sprayed with nonstick cooking spray over medium heat just until tender, about 1 minute. Stir in the soy mixture. Bring to a simmer and cook 1 minute.
Step 4Pour the ginger sauce on a platter, then arrange the steamed bok choy on the platter. Garnish with the red chiles and a few sprigs of cilantro.