My Sis-in-law taught me this, I prepared this many times but could not take photo, so when I prepared today took photos and posting it now.
Onion - 1 no(chopped)
Tomato - 1/2 no(chopped) - Optional
Green chilli - 3 nos(As per your taste)
Ginger - 1 tblspn
Kadalai Maav/Besan/Chickpea flour - 3 tblspn
Oil - 1 tblspn
Mustard - 1/2 tspn
Coriander leaves (chopped)- 2 tblspns
Mix kadalaimav with water and salt to watery consistency.
Heat a kadai, add oil, mustard and wait till it splutters.
Add onion, g chilli and ginger and saute till onion are transparant.
Then add tomato and saute till its soft.
Add the besan mix and stir well.
Reduce flame and cook till it blends well and raw smell goes.
It should not be too watery or too thick just in between.
Off the stove. Garnish with chopped coriander.
Serve hot with Dosa, Idli or chapathis.
Bombay Chutney is ready to serve. Check out soft idli recipe here.
Notes - It will become thick when its cool, add little water and warm it before serving.
Add salt if required.