Meanwhile, to make the filling, mince all the ingredients together, except for the peanut oil, potato starch and water.
Roll out the rested dough into 1 inch logs and cut into 1cm pieces. Lay each discs flat and pat down into flat circles. Using a small rolling pin, roll the edges out as you turn the disc until about 1-2mm thin.
Place a teaspoon of filling in the centre of each wrapper and dab the edges of the wrapper with water. Pinch the edges together to seal.
Heat a fry pan with oil (on low to medium heat) and arrange the dumplings in the pan. Allow the dumplings to sear at the base for 1 min.
Make a slurry with 1tsp potato starch (or 1Tb flour) mixed into 1/2 cup water. Carefully pour the slurry into the pan and quickly cover with a tight fitting lid. Allow the dumplings to steam until the liquid has evaporated.
Serve dumplings with a dipping sauce of fresh sliced chillies and soy sauce.