Knead the cake flour and water together to make a semi-hard dough. Set aside.
Mix together the minced vegetables, garlic, ginger, onion, chilli, coriander, crumbled stock cubes, salt and oil.
Divide the dough into 16 equal portions. Roll out each portion into thin rounds, place a portion of the filling in the centre and fold the edges up, pinching together to seal. A little water can help seal.
Steam for 10-12 minutes over rapidly boiling water. Serve with chilli garlic sauce.