In a mixer add deseeded gooseberries, grated coconut, green chilly, salt and cumin seeds. Grind it to fine paste adding water as required.
Transfer it to a big bowl and add whisked curds or buttermilk. Mix well.
Heat a seasoning pan adding all the seasoning ingredients in the same order as specified above, once when the mustard seeds splutter and split black gram lentil turns to little brown, add the seasoning to amla tambli/Nellikai tambli.
Cooling and vitamin C rich nellikai tambli is ready to serve with hot steamed rice.