garlic, ginger, green chili, and curry leaves, and stir for a few minutes.
stir, and then add 1/2 cup of water and tamarind.
when it boils, add the fish pieces, stir slowly, then cover it and cook on low-medium heat.
stir once a while until cooked (be careful not to break the fish pieces).
note: to clean fish nicely, put the fish pieces in cold water, add 1/2 cup of salt, a cup of vinegar, and 1 lime/lemon juice, and keep it for 15 minutes. it will take away the smell and the bad taste of fish. 