1/2 cup thinly sliced smoked ham (about 3 ounces), in bite-size pieces
3 scallions, thinly sliced
Active time: 30 minutes
Total time: 1 hour, 30 minutes
For the best flavor, use a ground-chicken mix this is half dark and half light meat.
In a medium bowl, stir together chicken and egg until sticky and very well combined. Add sherry, soy sauce, chili sauce, grated ginger, cilantro stems, 1/8 tsp. pepper, and 1 tsp. salt and mix well.
Drop dollops of the mixture onto a large plate, shaping them with a spoon to form 18 or so 1 1/2-inch meatballs. Cover and refrigerate for at least 1 hour.
Julienne reserved ginger, and chop cilantro leaves. In a large pot, bring broth, julienned ginger, and 1/2 tsp. salt to a boil. Gently add meatballs, reduce heat to medium, and simmer, uncovered, until cooked through, 6 to 8 minutes.
Add watercress stems, cook for 30 seconds, and then add ham, cilantro leaves, watercress leaves, and scallions. Season to taste with salt and pepper and serve.