Step 1: Marinate the Fish

Begin by washing the fish pieces and patting them dry. Cut the fish into medium-sized cubes or strips. In a bowl, combine ginger-garlic paste, red chili powder, turmeric powder, lemon juice, salt, corn flour, and all-purpose flour. Add a little water to create a thick batter. Coat the fish pieces evenly in this batter and let them marinate for 15–20 minutes.

Step 2: Deep Fry the Fish

Heat oil in a deep frying pan or kadai over medium heat. Once hot, carefully add the marinated fish pieces and fry until they are golden brown and crispy. Remove the fried fish from the pan and place them on paper towels to absorb excess oil.

Step 3: Prepare the Stir-Fry

In a separate pan, heat 2 tablespoons of oil over medium heat. Add sliced onions, green chilies, and curry leaves; sauté until the onions turn golden brown. Incorporate ginger-garlic paste and stir until fragrant. Next, add red chili sauce, soy sauce, and tomato ketchup; mix well to combine.

Gently toss in the fried fish, ensuring each piece is coated with the sauce mixture.

Step 4: Garnish and Serve

Check for seasoning and adjust salt if necessary. Garnish with fresh coriander leaves for added flavor and presentation. Serve hot as an appetizer or alongside rice or naan for a delicious meal.