First steam cook tomato and tamarind for 10 minutes or until tomato skin comes off easily
Turn off the stove and cool
Crush garlic and keep it aside
Add oil to a wide heavy bottomed pan and heat the oil
Furthermore, add mustard seeds, and fenugreek seeds; let them splutter
Add crushed garlic and curry leaves; roast till they change golden brown
Turn down to low flame
Furthermore, add Kashmiri chilli powder, and red chilli powder; give a quick mix
Add asafoetida and tomato mixture; mix well
Turn to medium flame
Add salt and jaggery; mix well
Cook for 10-12 minutes or until thokku thickens and oil oozes out around the pan
Finally, add oil and cook on low flame for 4 mins