3 - 4 lb / 1.5 - 2 kg whole chicken, skin on
2½ cups Chinese cooking wine (or sherry) (see notes)
¾ cup brown sugar (or substitute with white sugar)
¼ cup black vinegar (or substitute with malt vinegar, or white vinegar. Don't use balsamic)
1¼ cups light soy sauce (or substitute with ¾ cup ordinary soy sauce + ½ cup water + 1 tsp salt)
3 tbsp coarsely chopped ginger (no need to peel)
4 garlic cloves, crushed (not minced , just bang down on the clove (skin on) with the side of a knife or meat mallet so it bursts open but is still largely one piece. Then remove the skin)
3 tbsp cooking oil (vegetable or canola)
Place all ingredients except the oil in slow cooker.
Slow cook on high for 8 hours.
Remove chicken from braising liquid.
Shred with your hands or two forks, including the skin. The meat should fall off very easily.
Heat 1 tbsp of oil over high heat in a large heavy based fry pan.
Add chicken (enough to cover the pan without crowding it) and drizzle over braising liquid.
Cook until the underside is browned and crispy (about 1½ minutes), then remove from the pan. Don't flip the chicken
Repeat with remaining chicken (it takes about 3 batches).