Cut the fish into cubes and add 2tbsp white vinegar .Leave aside for 5 minutes and wash
Place the fish in a colander to drain the water
For the marinade mix together 1tsp turmeric, salt as required, the juice of 4 lemons, 2tbsp tikka masala,1tsp roasted and ground cumin and 1tbsp crushed red chilies.
Coat the fish with the marinade and leave aside for 10 minutes
Heat a grill pan and grease it slightly.
Grill the fish , turning when one side has slightly browned
The delicious achari fish tikkae are ready to serve