Begin by pounding together the coriander roots, black peppercorns, and garlic in a mortar and pestle until finely crushed.

In a separate bowl, combine the golden mountain sauce, white sugar, sesame oil, and oyster sauce. Stir until the sugar is dissolved.

Using a food processor, combine the ground pork with the prepared sauce mixture, one egg, and cornstarch. Pulse until smooth.

Transfer the blended filling to a mixing bowl, and add the crushed spice mixture, carrots, green onions, and shiitake mushrooms. Mix thoroughly.

Take a dumpling wrapper, place it over a tablespoon, add filling, moisten edges with water, and seal tightly.

Prepare a steamer by lining it with parchment paper, arrange dumplings, and steam over boiling water for about 10 minutes.