Press tofu with thick layers of paper towel or Tofu press .Leave it for 30 minutes.
Cut tofu into big cubes .
Coat with cornstarch mixed with salt and black pepper.
Dust off the excess corn starch.
Shallow fry or bake the tofu to make it crispy .Keep it in a plate.
Take a wok .Add oil .
Heat it .
When its hot enough add dry red chilli. Let it crackle.
Add ginger and garlic saute for a minute .Keep the gas flame on high.
Add onion and peppers .Add salt to it .Stir it for 1 minute .
Mix all the above mentioned sauce to make a sauce mix. Saute that with the vegetables .
Let it cook for 1 minute .
Add tofu .Mix it properly with the sauce and vegetables.
Mix 1 tbsp of corn starch with 2 tbsp of water .
Add this mixture to the stir fry.
Stir it and cook for 1-2 minute.
Add green onion and cilantro to it .
Serve with white rice ,fried rice or noodles.
Enjoy.