In a large bowl, combine the ground pork, garlic chives, garlic, ginger, soy sauce, sugar, oyster sauce, sesame oil, salt, and white pepper. Mix well until evenly combined then let the filling marinate for 15 minutes.
1.5 pounds ground pork, 1.5 cups finely chopped garlic chives, 3 cloves garlic, 2 tablespoon minced ginger, 3 tablespoon soy sauce, 2 teaspoon granulated sugar, 1.5 tablespoon oyster sauce, 2 teaspoon sesame oil, ¾ teaspoon salt, 1 teaspoon white pepper
In a small bowl, combine Chinese black vinegar, soy sauce, sugar, and chili oil. Serve dumplings immediately with the dipping sauce.
3 tablespoon Chinese black vinegar, 2 tablespoon soy sauce, 1 teaspoon granulated sugar, 1 tablespoon chili oil