Ingredients :
 
Toor Dal             1/2 Cup Cooked.
Tamarind             lemon size soaked in water
salt                 Acc to taste
pearl/small Onions   1/4   kgs skin removed
Dhania seeds         2 tsp
Channa dal           1 tsp
Red Chilies          4 Nos or Acc to taste
Coconut              1 tbsp
Oil                  1 tbsp

Seasoning :

Mustard seeds          1 tsp
Red chilies optional   1 No
Urad dal               1 tsp
Curry Leaves           few

Method : 
Saok the tamarind in water & squeeze the juice.
In a pan with a tsp of oil fry dhania,red chilies.channa dal.
Grind it with coconut to a smooth paste.

In the same pan with the remaining oil fry the onions for a minute.
Add the tamarind Juice, salt &  let it boil till the raw smell diminishes.
Add the ground paste & Toor Dal to the tamarind mixture & let it cook for few minutes.
Do the seasoning & adjust the salt.

Serve it hot with Rice , Idli  or Masala dosa