Tamarind soaked in water
Add to water and boil (water based on quantity requirement of rasam)
Add ground jeera powder and ground pepper powder (1 teaspoon each) - or readymade rasam powder
Bring water to boil
Add 1 teaspoon jaggery and half teaspoon chilli powder
Add salt to taste
After boiling more, add one cup daal (steamed in pressure cooker)
Separately make tadka with one teaspoon ghee, curry leaves and hing
Add tadka to boiling rasam, boil more for more taste.
Done.