Chinese
Combine prawns, pork, water chestnuts, spring onion, ginger, soy, sesame oil, wine, cornstarch, and salt into a sticky filling.
Chill the filling for 20 minutes so it firms up and holds together.
Place a spoonful in the center of each wrapper.
Gather and pleat the edges to form open-topped siu mai or fully sealed dumplings.
Line a bamboo steamer with parchment and arrange the dumplings without touching.
Steam over rapidly boiling water for 8-10 minutes until the filling is cooked through.
Serve hot with soy sauce and chili oil for dipping.