Combine chicken thighs or minced chicken with crushed garlic, coriander, spring onion, and grated ginger
Add sesame oil, soy sauce, oyster sauce, and white sugar to the chicken mixture
Mix in the egg to bind the filling
Mix cornflour with water to create a slurry
Fill dumpling or gyoza wrappers with the chicken mixture, sealing edges with the cornflour slurry
Heat oil in a pan and fry dumplings until crispy
Add water to the pan and cover to steam the dumplings
For the sauce, combine oyster sauce, sweet soy sauce, fish sauce, and chilli oil
Serve crispy dumplings with the sauce
