Prepare the filling by combining ground pork, finely chopped lotus root, 2 tbsp soy sauce, 1 tbsp dark soy sauce, 1 tbsp sesame oil, and ½ tsp salt
Fill dumpling wrappers with the pork and lotus root mixture
Heat 2 tbsp cooking oil in a pan over medium-high heat
Pan fry the dumplings until the bottoms are golden brown
Prepare the filling water by steeping 1 tbsp sichuan peppercorn and 3 slices of ginger in a bowl of hot water
Pour the hot filling water into the pan with the dumplings and cover
Steam the dumplings until the water is absorbed and they are cooked through
Prepare dipping sauce by mixing 2 tbsp soy sauce and 1 tbsp Chinese black vinegar
Serve the dumplings with the dipping sauce
