Pork, Ginger and Cilantro Dumplings

Ingredients

• • 3 cups (210 g) napa cabbage, thinly sliced
  • 1 1/2 cups (55 g) cilantro leaves and stems, coarsely chopped
  • 4 garlic cloves, halved
  • 2 green onions, cut into pieces, plus more for serving
  • 1 piece fresh ginger, about 4 inches (10 cm) long, peeled and cut into pieces
  • 3 1/4 lb (1.5 kg) medium-lean ground pork
  • 1/3 cup (75 ml) low-sodium soy sauce
  • 3 tbsp (45 ml) sesame oil
  • 3 tbsp cornstarch
  • 1 tbsp (15 ml) sambal oelek
  • 1 tbsp (15 ml) rice vinegar
  • 1/2 tsp salt
  • 2 packages (1 lb/450 g each) frozen round dumpling wrappers, thawed (about 100 wrappers) (see note)
  • Vegetable oil, for cooking
  • Sesame seeds, for serving