Heat a pan with oil, add chopped ginger, garlic and sauté them, then add chopped onions along with green chillies and fry them for 2-3 min.
In a small bowl, mix corn flour with all the sauces and with little water. Add this mixture to the pan and stir on low flame until the raw smell goes.
Finely add the fried Manchurian and coat well with the sauce and turn off the flame. Garnish it with coriander leaves and enjoy.