Always keep all the ingredients ready as it makes your job easier and you will never forget anything.
Mash senai also. You do not have to mash it to a fine paste.
Heat oil, add mustard seeds, when it splutters, add hing, green chillies, ginger and curry leaves.
Saute for 2-3 seconds, then add cooked tur dal and mashed senai.
Note -If you are using fresh lemon juice instead of tamarind, add water (instead of tamarind extract) and cook until everything gets blended well. Once it cools a little, you can add lemon juice and mix it well.