In a large kadai, heat some oil, then add mustard seeds, jeera, urad dal and hing.
Add crushed garlic cloves and curry leaves. Saute till garlic turns light golden brown.
Add chopped onions and green chillies. Fry them till they turn transparent.
Now add tamarind extract, salt and turmeric powder.Boil till the raw smell of tamarind goes away.
Add beetroot puree, some water to adjust the consistency of rasam and boil for 5 minutes.
Then add some chilli powder and chopped pudina leaves. Give it a good stir and get to a boil.
Garnish with some chopped coriander leaves and serve beetroot rasam with hot steamed rice.