Cut the fish fillets into small bite-size pieces. Add garlic paste, ginger paste, chilli powder, turmeric, garam masala, lime juice and salt. Mix it well and marinade for 10 minutes.
Then add the egg white, gram flour, corn starch, and water. Combine everything well until the batter forms into thick paste.
Fill the heavy bottom pot with oil to 3-4 inches. Heat the oil over medium-high heat about 350°F ( 170° C ).
Scoop each fish pieces with a spoon and slide it gently into the hot oil. Deep fry for 3-4 minutes or until crispy golden brown.
Remove from oil and place it over the paper towel. Transfer to serving plate and garnish with corianer and lemon wedges. Serve with your favourite dipping sauce.