Soak the tamarind in hot warm for 30 minutes and extract the juice
In kadai heat some oil and add peeled garlic and shallots / onion and saute it till it turns translucent
Then add Curry leaves and tomato and cook till they are soft
Then add grated coconut and Mix well and switch of the flame
Once the mixture cool downs add this to blender jar with some water
Blend it to Smooth paste
In the same kadai heat some oil and add okra/vendakkai and fry them till they done
To the same oil add mustard and methi seeds and once it crackle add sambar powder, chili powder,coriander powder and turmeric and saute them quickly in low flame
To this add ground paste and mix it with the masala
Now add extracted tamarind juice, Fried okra/vendakkai and salt and stir well then cover and cook for 10 minutes
Finally add Coriander leaves and switch of the flame
Serve it hot with rice