Wash and chop tomato. Soak tamarind and take the extract in 1 cup of water.
In a kadai or bowl, temper mustard seeds, cumin seeds, red chilli.
Saute till tomato turns mushy. Add rasam powder and saute quickly.
Add 1 cup of tamarind extract, salt, turmeric powder and sugar.
Boil till raw smell of tamarind emanates and nice smell wafts through.
Add 1/2 cup more water and crushed garlic cloves. Boil in medium flame till frothy.
Switch off the flame and garnish with coriander leaves.
Transfer to a bowl, add 2 tsp of ghee. Cover with a lid.
Serve after 30 minutes for best taste.
Serve with plain rice and potato curry – the best side dish for rasam !