Slit green chillis.
Cut potatoes into bite size cubes.
Cut vankaya/brinjal into medium size pieces.
Pressure cook potatoes for three whistles with added salt and turmeric powder.
Once the pressure cools down drain excess water and keep aside.
Boil vankaya/brinjal in a thick bottom pan.
Once the brinjal cooked softly drain excess water and keep aside.
In a thick bottom pan, heat oil.
Add chana dal and urad dal.
Let the dals change their colour add mustard seeds and cumin seeds.
Once the mustard seeds start crackling add asafoetida, red chillis and curry leaves.
Add slit green chillis and saute well.
Add cooked vegetables, vankaya and potato.
Add salt and turmeric powder.
Combine them well and add thin tamarind juice.
Let the vegetables cook in tamarind juice for a minute.
Once the moisture slowly evaporates add curry masala powder and mix it well.
Switch off the flame and transfer to serving bowl.
Serve vankaya aloo curry with hot piping rice and a spoonful of ghee.