Make the dough
Add the flour and salt to a bowl.
Gradually add the water, mixing as you go, until a shaggy dough forms.
Knead for around 10 minutes, until the dough becomes smooth and elastic.
Cover and let it rest for 1 hour.
Make the filling
Add the lamb or pork mince, drained Chinese cabbage, red onion, white pepper or Sichuan pepper, coriander, salt, sugar, five spice, cumin, chilli powder, ginger-garlic paste, light soy sauce, dark soy sauce, Shaoxing wine and spring onion to a bowl.
Mix thoroughly until everything is well combined.
I'd definitely recommend pan-frying a small amount of the filling and tasting it before making all your dumplings, this was you can adjust the salt, cumin or chilli to your liking.
Make the wrappers
Divide the rested dough into two pieces.
Roll each piece into a long log, then cut into small, even pieces.
Roll each piece into a thin circle to make your dumpling wrappers. You should get around 20 wrappers.
Fill & pleat
Place around 1 tbsp of filling in the centre of each wrapper, or as much as you can comfortably fit without making it impossible to seal.
Fold and pleat the dumplings, making sure the edges are sealed tightly.
Repeat until you've used all the filling.
Pan-fry the dumplings
Heat a generous drizzle of neutral oil in a pan over medium-high heat.
Place the dumplings into the pan and fry for around 2 minutes, or until the bottoms are golden brown.
Carefully add enough water to cover the bottom of the pan, then immediately cover with a lid.
Steam for around 8 minutes.
Crisp them up
Remove the lid and continue cooking until all the remaining water has evaporated.
Let the dumplings continue frying until the bottoms are deeply golden and crispy.
Make the spicy sauce
Add the chilli powder, minced garlic, spring onion and chopped coriander to a heatproof bowl.
Heat the neutral oil until very hot, then carefully pour it over the aromatics and chilli powder.
Add the soy sauce, black vinegar, oyster sauce and sugar.
Mix everything together.
Serve
Transfer the crispy dumplings to a plate and spoon over as much of that spicy cumin-inspired sauce as your heart desires.
Finish with extra coriander and spring onion.