Soup Dumplings

Name: Soup Dumplings
Prep time: 30 min
Total time: 30 min
Cuisine: Asian
Ingredients: 1 1/4 c. chicken bone broth; 2 tbsp. Chinese light soy sauce; 1 (2") piece ginger, sliced; 5 cloves garlic, smashed; 1 (1/4-oz.) package gelatin; 4 c. (480 g.) all-purpose flour, plus more for dusting; 1 1/4 c. hot water; 1 lb. ground pork; 3 scallions, sliced; 2 tbsp. Shaoxing rice wine; 2 tsp. grated garlic; 1 tsp. finely grated peeled ginger; 1/4 tsp. ground white pepper; 1/2 tsp. kosher salt (optional); 1 head of Napa cabbage; Chinese black vinegar and chili oil, for dipping