Combine all the ingredients for the ravioli dough ( bôt banh bao flour, milk, sugar, Salt). Let rest 20 minutes and then knead the dough again with the canola oil. Cover with plastic wrap and let rest 30 minutes.
Take walnut-size balls of dough and roll out flat. Place a teaspoonful of the filling into each one and seal; then place each ravioli on top of a thin carrot slice. Steam for 7 minutes and serve in a bamboo basket.
Decorate with orange zest and cilantro. Add a few drops of olive oil. This dish can be accompanied by plenty of soya sauce, spices, citrus fruit, etc.