Combine pork belly, green shallots, coriander, ginger, oyster sauce, light soy, sherry, brown sugar and sesame oil together in a food processor, and process until finely chopped.
Add prawn meat and pulse until just combined.
Wet the edge of a gow gee wrapper with a little water. Place 1 teaspoon of the filling in the centre. Fold wrapper in half then press edges together to seal. Toss heavily in corn flour. Repeat with remaining wrappers and filling.
Heat a little of the oil in a large non-stick frying pan over medium heat. Add 8 dumplings at a time in a single layer, then add ½ cup water. Cover for 5 minutes or until most of the water has evaporated.
Remove the lid and cook for 2-3 minutes until dumplings are crisp and golden and a lace pattern has formed in the pan. Invert carefully onto a plate. Repeat with remaining oil and dumplings. Serve with black vinegar, chilli and chilli sauce.