Add the ginger, garlic, star anise, bay leaf, and cinnamon stick. Stir-fry for 1 minute to release the aroma.
Add white pepper, soy sauce and dark soy sauce for color and flavor.
Pour in a can of light beer (lager) at room temperature or slightly warm - avoid cold beer as it might shock the meat. Add enough water to just cover the pork. Let it bubble away for 5 minutes, which allows some alcohol to evaporate while leaving behind those deep, malty flavors.
Bring to a gentle boil, then reduce to low heat. Cover and let it braise for 45 minutes to 1 hour. Stir occasionally to avoid burning.