Clean and pat dry the fish slices. Prepare a marinade of turmeric powder, pepper powder, ginger garlic paste, soy sauce and salt. Marinate the fish in this for 15 to 20 minutes.
Roast and coarsely grind the peanuts in a mortar and pestle. Shallow fry the fish in oil till crisp on both the sides. Drain excess oil on a kitchen towel.
In the same pan add the chopped garlic and fry for a minute. Add the onions and saute until it wilts.
Add slit green chillies and fry for another minute before adding in the pepper powder, vinegar, salt and soy sauce. Let this cook for a minute on low flame.
Toss in the fried fish along with the ground peanuts. Give it a good mix before turning off the flame.
By Ria Samuel