Heat the oil in a wok / pan
Add ginger/galangal and sliced garlic (if using) and fry for a few seconds.
Now add chopped onion, ginger, french beans, peas and fry for 3-4 minutes on high heat.
Follow it up with vegetable stock, 2 cups of water, vinegar, light soya sauce, dark soya sauce, chilli sauce, pepper and salt, mix well bring the mix to a light boil.
Add the cornflour dissolved into water, mix well and cook for 2-3 minutes, while stirring continuously.
Serve hot topped with coriander and chopped spring onion greens.
If you like you can top it with few deep fried noodles just before serving.