What you will need:
Tingalavaro - 1/2 cup
Toor dal - 1/4 cup
Vegetables - 1 cup (potato, beans, carrots etc)
Tamarind - lime sized, soaked in water
Green chillies - 3 to 4
Sambar powder - 2 tsp
Curry leaves - 2 strands
Mustard seeds - 2 tsps
Jaggery - 1 tbsp
Oil - 1 tbsp
Salt to taste

How to prepare
Cook the beans, toor dal and vegetables with some salt, jaggery and green chillies.
Squeeze the juice out of the tamarind soaked in water. Mix the sambar powder with the tamarind juice and add to the beans and vegetables. Bring it to a boil and turn the heat off.
Heat oil in a pan and add mustard seeds. When the seeds crackle, add the curry leaves. Pour the seasoning over the sambar.
Serve with rice, idly or dosa.