Soak tamarind in 1/2 cup of warm water for 10-15 min and squeeze the juice
If you are using tamarind pulp then dilute with 1/2cup of water
Heat ghee in a kadai add the mustard seeds, cumin seeds, when its splutter, add asafetida, curry leaves and crushed garlic, green chillies and half of the crushed ginger
Add tomatoes and fry for a minute, add tamarind juice and 2 cups water with salt, turmeric powder, sugar and mix well and bring it to boil
Add the remaining crushed ginger, whole black pepper and bring to boil
When it boils, remove from the stove and add the lime juice and coriander leaves and close immediately with the lid for 10 -15 min this allows flavors to set
Serve hot or warm with rice and fried pappadam or enjoy
