You Need To Have:
1/2 cup Yellow Lentil/Togari bele
2 medium size tomato
3-4 tsp sarina pudi/rasam powder
4-5 tsp tamarind juice
1 tsp ghee
1/2 tsp mustard seeds
3-4 curry leaves
pinch of hing
Put chopped tomato , toor dal in a cooker container .pessure cook it for 3-4 whistels and keep it aside(add 1 tbs oil and pinch of turmeric to dal ).
Take out excess water(keep it for later use) and smash dal and tomato with help of smasher. Add tamarind juice,rasam powder,salt and water which is collected from cooked dal.bring it to boil.
Heat ghee and mustard seeds in a tadka pan. once they start spluttering add hing and curry leaves. Add this tadka to tili saru and mix well.
Serve hot with plain rice and uddina happala.