Mix the flour, yeast, sugar, salt and warm milk or
water and knead to a smooth dough. Cover and leave
to rise in a warm place for 45 minutes.
Heat the oil
and fry the beef until lightly browned. Add the
onion, ginger, cashews, five-spice powder, soy
sauce, hoisin sauce and wine vinegar and bring to
the boil.
Mix the corn-flour and water, stir into the
sauce and simmer for 2 minutes. Leave to cool. Shape
the dough into 16 balls.
Press flat, spoon some
filling into each and close the dough around the
filling. Put in a steam basket in a wok or pan,
cover and steam over salted water for about 30
minutes.