Using a mortar and pestle, pound together the coriander roots, black peppercorns, and garlic until you achieve a fine paste. Set aside.

In a mixing bowl, combine the Golden Mountain sauce, sugar, sesame oil, and oyster sauce. Stir well until fully integrated.

Blend the ground pork with the sauce mixture, egg, and cornstarch until smooth. Add the prepared spice mixture along with diced carrots, chopped green onions, and mushrooms. Mix thoroughly.

Take a wonton wrapper and place it over the back of a spoon. Spoon a portion of the filling onto the center, dampen edges with water, fold, and seal.

Prepare your steamer by lining it with parchment paper. Arrange the dumplings in a single layer and steam over medium heat for 10 minutes.

Once steamed, remove the dumplings from the steamer. Serve hot, garnished with crispy fried garlic if desired.