In a mixing bowl, use your hands to combine ground pork, 1/2 tsp. salt, 1/4 tsp. pepper, slaw mix, half the garlic, half the ginger, green onions (reserving a pinch for garnish), and 2 Tbsp. of the dumpling sauce (reserve remaining for dipping!). Wash your hands. Prepare a dumpling assembly area by clearing off a clean surface, soaking a clean kitchen towel and placing it on a plate for moistening wrappers, dampening a second clean kitchen towel for covering finished dumplings, and setting out a small bowl of water to wet your fingers.