In a large bowl, combine the flour and water. Mix with chopsticks until a shaggy dough forms.
Knead the dough for a few minutes until a soft but hard dough forms. Cover with cling film or plastic wrap and set aside.
In a large bowl, combine your pork mince, garlic, ginger, water chestnuts, spring onions, sugar, soy sauce, sesame oil, rice wine vinegar, fish sauce, and msg. Give it a good mix until a light paste forms.
Roll out your dough into a sausage shape and slice into 16 equal pieces.
Using a rolling pin, roll out each piece into a thin circular wrapper around 2 inches in diameter.
Get a frying pan and drizzle with a touch of oil on medium heat.
Place 3 spoonfuls of the filling into the pan spread equal distance apart and then place a wrapper on each of the spoonfuls of filling. Using the back of a spatula, "smash" the gyoza's down so they're totally flat. Fry on each side for 4 minutes, when you flip over the gyoza, pour in 50ml water and place the lid on the pan.
Repeat the step above and keep your cooked dumplings warm by keeping them on a plate with tin foil.
Combine all of your dipping sauce ingredients in a bowl.
Once all your dumplings are cooked, serve up with your dipping sauce and enjoy!