Andhra fish curry

*  1  tablespoon garlic paste
*  1  tablespoon tamarind paste
*  1  sprig curry leaves
*  1  tablespoon lemon juice
*  2  tablespoons ghee
*  Salt to taste
*  Finely chopped fresh coriander to garnish
   
For the paste
*  1  cup grated coconut
*  4  dry red chillies
*  1  onion
*  1  tablespoon coriander seeds
*  1  teaspoon cumin seeds
*  ½  teaspoon turmeric
powder

1. Rub the washed fish pieces with some salt, lemon juice and a pinch of the turmeric powder. Keep aside for five minutes. Wash well. Smear some oil on the onion and roast it on a flame or oven till it is well-browned. Cool and chop.
     In a pan, dry-roast the grated coconut on low heat till it is brown and aromatic. Cool and grind both to a fine paste along with the other ingredients given above for the paste.

2. Heat the ghee in a heavy-bottomed pan and add the curry leaves. Add the ground paste and the garlic paste. Fry on medium heat till it is light brown and aromatic.
3. Add the fish pieces, tamarind paste and salt. Stir gently. Cover and cook on low heat for about 12  minutes or till the fish is cooked but firm.