Soak 1 tablespoon tamarind in water and extract juice out of it. Keep it aside.
Peel and cut into cubes beetroot.
Peel and cut beetroot into cubes.
Soak tamarind and toor dal separately.
Pressure cook toor dal for 3 whistles.
Pressure cook beetroot also for 4 whistles.
Once done, mash the dal and drain excess water from beetroot pieces. Keep aside.
Heat oil in a thick bottomed pan, add mustard seeds, cumin seeds and red chilli pieces.
When they start splutter add beetroot pieces, tamarind juice and some water.
Add salt and turmeric powder. Mix well.
Allow it to boil for 5 minutes.
Add the above made kootu masala and allow it to boil.
Add cooked dal and let it boil it for 15 more minutes or till the aroma comes up.
Lastly add a pinch of asafoetida and let the kootu absorb the flavor.
Serve beetroot kootu with hot piping rice and ghee.