Add oil, mustard seeds, chana dal, urad dal, fenugreek seeds and peanuts in a pan.
Saute till peanuts begins to change their colour.
Add green chilli, dry red chillies and curry leaves. Saute for couple of seconds.
Place a sieve on the pan and pour tamarind mixture into the sieve.
Stir in the sieve so that maximum pulp releases from the tamarind mixture and pass on to the pan. (See notes below).
Add turmeric powder, coriander powder, cumin powder, asafoetida (see notes) and 2 tbsp of water. Mix.
Cook on low to medium heat till oil is seen separating on the surface of pan. It will hardly take 1 to 2 minutes.
Add cooked rice and salt. Mix well.
Cover the pan with a lid and let rice simmer on low heat for 2 minutes or until rice becomes warm.
Tamarind rice are ready. Enjoy.