Marinate the paneer with salt , flour, cornflour,red chili powder,1/4 cup of water for atleast 20-30 mins.
Heat a shallow pan with about 1/4 cup oil and lightly fry the paneer pieces until golden brown. Set aside.
In the remaining oil, add garlic and ginger saute it for 1 minute.Add the chillies and fry for 2 minutes. Next, add the onions and capsicum and fry until soft (5-8 mins). Add vinegar and mix well. Add the fried fried and the remaining quantities of ingredients used to marinate (1/2 tbsp soya sauce, 1/2 tbsp green chilli sauce,tomato sauce, salt).
Stir all the ingredients until well combined and fry for another 3-4 mins on high flame,stir it continuously . serve hot.