Grate cabbage , add ginger garlic paste cornflour do not add altogether add 1 and half tbsp and maida.
Also 1 and half tbsp and add the remaining maida and cornflour till it becomes a dough type consistency add salt and black pepper as well.
Make small balls of it and deep fry till nice golden.
Now in a wok or Chinese kadai or any utensil which you are taking make sure you heat the utensil nicely now add 1 tbsp oil add garlic chopped, green chilli, shimla mirchi, pyaaz chopped, tomato sauce, red chilli sauce and soy sauce.
You can adjust the sauce as per your taste and preferences.
Now dissolve cornflour in water and add it gradually and add the fried Manchurian balls in it lastly add chopped spring onion.