For preparing dry white tuna roast, heat oil in a vessel, splutter mustard seeds and then add curry leaves.

Add sliced onions and saute till it becomes golden brown.

Then add chopped ginger, garlic and green chillies. Saute it well.

Toss in the tomato and saute it for 2 minutes.

Sprinkle in chilly powder, turmeric powder and fenugreek powder. Stir it.

Now add the white tuna(drain the oil from the can and crush the fish with spoon or hand) to it and stir well.

Add in garam masala powder and stir it till it becomes dry.

Dry white tuna roast is ready. Serve hot with chappathi