Start by frying some chicken. Take chicken in a bowl, add in flour, cornflour, salt, pepper, soy sauce, ginger garlic paste and water. mix well. Set aside for 10 mins.
Heat some oil for deep frying, drop the chicken in and fry till golden, drain and set aside.
Now make the sauce, heat some butter in a pan, add in ginger garlic and fry till golden.
Add in onions. green chillies, salt and sugar. Toss well.
Add in capsicum and mix well.
Add in red chilli powder, soy sauce, green chilli sauce, vinegar, ketchup adn mix well.
Add in water and cook till oil separates.
Add in fried chicken and toss well.
Add in pepper and spring onion. Mix well.