In a wok, add oil and heat it.
Add very finely chopped garlic and ginger, saute to get rid of raw smell.
Add slit green chillies, saute for few seconds.
Add finely chopped onion, cook the onions until they turn soft.
Add cubes of onion and green capsicum, cook them until they turn soft.
Add water, salt as per taste, add red chilli powder, white pepper powder and mix well.
Add tomato ketchup, green chilli sauce, soya sauce, vinegar, mix well and cook for few seconds.
Add corn starch mixed with some water, mix all the sauces well and cook for few minutes.
add the fried chicken pieces.
Mix well and saute few minutes.
Lastyly, garnish with spring onions and serve hot.
Chicken manchurian is ready to be served.
Watch the video procedure above.