firstly in a kadai take 1.5 cup radish and 1 onion.
also add few curry leaves, ¼ tsp turmeric and 1 cup water.
mix well, cover and boil for 5 minutes or till radish gets half cooked.
further add ½ cup tamarind extract, small piece jaggery and 1 tsp salt. mix well.
continue to boil for 5 more minutes or till radish gets cooked well.
now add ¾ cup toor dal and prepared masala paste.
mix well adjusting consistency as required.
boil for 5 minutes or till the raw smell of coconut disappears.
pour the tempering over sambar and mix well.
finally, serve mullangi sambar / radish sambar with hot steamed rice.