In a bowl mix salt, pepper, chili flakes, garlic, ginger, cilantro, and sugar until well blended.
In a bigger, non-reactive bowl, place ground pork. Add vinegar and fish sauce, then sprinkle with bread crumbs.
Add the spice mix from step one to the pork and mix with your hands until incorporated.
Cook a small amount of the mince mix to taste and adjust seasoning (and cook and taste again) as needed. Leave the mince mix in the fridge for an hour.
After the mixture has rested, shape into balls, patties, or logs and fry until just done...do not overcook! Watch them to make sure the sugar does not burn.