Filling:
Wrappers:
Sauce:
Knead together the filling ingredients in a medium bowl.
Form wontons by placing about 2 tsp of filling in the middle of a wrapper, wetting the edges of the wrapper with a wet finger, folding in half, sealing the edges, and folding the wings around.
Boil wontons in batches of 10–12 for 4 minutes per batch. While boiling, combine sauce ingredients.
Remove wontons from water with a skimmer, spoon sauce over them, and serve.
Shiaoxing and chinkiang are available at Asian markets (e.g. YZ mart) or online. If unavailable, sub a 1:2 ratio of balsamic:rice wine vinegar in place of chinkiang. Substitute cooking sherry for shiaoxing.