In a bowl, add some chilli paste, salt, cornstarch, all-purpose flour, little water and make a slightly thick batter. Put in the tofu pieces in this mixture and mix gently to coat all the tofu pieces nicely. Heat oil in a pan and deep fry the tofu pieces until golden in colour and crisp.
For making the slurry, in a bowl add tomato ketchup, vinegar, MSG, salt, soya sauce, green chilli sauce, pepper pd and mix well. Keep this mixture aside.
Heat little oil in a pan and when it’s hot, add finely chopped ginger, garlic, green chillies and sauté. Add red, green and yellow coloured bell peppers and onions. Slightly sauté and add the slurry, mix and bring to a boil. Add sugar and toss all the ingredients. Finally add the fried tofu and toss well. Serve hot.