First put tamarin in water keep aside
Second fry bindi in tawa add chilli and salt fry upto it cook
Third add oil in pan seasoning with fennal powder
Then add onion fry well
Add tomato fry well
Add bindi fry mix
Then add chilli powder, corriander powder and tumeric fry for few min
Add water leave it to boil for few mins
Finally add tamarind water
Ready to serve.