20g dried shiitake mushrooms
1 tbsp vegetable oil
2 cloves, finely chopped garlic
a thumb-sized piece, finely chopped ginger
ground to make 2 tsp sichuan peppercorns
750ml chicken stock
5 tbsp (see notes below) chinkiang black vinegar
2 tsp soft dark brown sugar
2 tbsp (see notes below) chiu chow chilli oil
a handful of leaves, to serve coriander
300g pork mince
a thumb-sized piece, finely chopped ginger
2 cloves, finely chopped garlic
2, finely chopped spring onions
1 tsp cornflour
1 tsp caster sugar
½ tsp fine sea salt
28 square dumpling or wonton wrappers
1 tbsp toasted sesame oil