Thin, sour, fiery soup of tamarind, black pepper and tomato — the healing third course of every Tamil Nadu meal and the preparation that most defines the state's culinary character.

Ingredients

Method

  1. Combine tamarind water, quartered tomato, crushed black pepper, rasam powder and turmeric in a pot.
  2. Bring to a boil. Simmer on medium for 6 to 8 minutes until tomatoes are soft.
  3. Add the cooked toor dal liquid (the thin water from cooking dal — the dal itself can be used for sambar).
  4. The dal liquid adds body without thickness.
  5. Simmer 3 minutes. Season with salt.
  6. For tempering: heat 1 tbsp sesame oil. Add mustard seeds — pop.
  7. Add asafoetida, curry leaves and dried red chillies.
  8. Pour tempering over the rasam. Add fresh coriander.
  9. Rasam should be thin enough to drink from a cup — it is poured over rice or drunk directly.