Boiled Chinese Dumplings

Name: Boiled Chinese Dumplings
Cook time: 5 h 30 min
Total time: 5 h 30 min
Cuisine: Asian, Chinese
Ingredients: 1/3 cup sake; 1/4 cup soy sauce; 1/4 cup unseasoned rice vinegar; 1 tablespoon sugar; 3 thin slices of garlic; 1 tablespoon minced scallion; 1/2 tablespoon minced fresh ginger; 1 tablespoon hot-chile sesame oil; 1/2 head napa cabbage (1 pound)—root cut off, cabbage halved lengthwise; 3/4 pound ground pork; 1/4 bunch Chinese chives or 2 scallions, minced; 1 tablespoon finely grated fresh ginger; 1 tablespoon dark or regular soy sauce; 1/2 tablespoon finely grated garlic; 1 teaspoon toasted sesame oil; 3/4 teaspoon kosher salt; 2 tablespoons vegetable oil; 2 3/4 cups all-purpose flour; Cornstarch, for dusting