Ingredients:
2 tbsp groundnut oil
2 tbsp fermented black beans (rinsed and dried)
1 tbsp garlic, minced
120ml chicken stock
1 tbsp dark soy sauce
1 tbsp rice wine
1 tsp sugar
1 1/2 tsp cornflour
Method:
Whisk the cornflour with 2 tbsp of the chicken stock to make a slurry then add to the remainder of the chicken stock.
Heat a wok over medium heat. Add the oil, black beans and garlic and stir-fry for about 20 seconds. Add all the remaining ingredients, bring to a boil and cook for about 2 minutes or until the sauce thickens.
This can be used immediately, or it can be poured into a sterilized jar that's been baked in an oven pre-heated to 110°C for 15 minutes before being sealed, allowed to cool and stored in the fridge.
For a richer variant of this sauce add 1 tbsp each of red and green bell pepper pieces for the last 1 minute of cooking.