This is a very common and a popular chutney which goes very well with all varieties of idli and dosa.

Ingredients

Onions- 2 medium size
Tomatoes- 2 medium size
Oil- 2 tsp
Ginger- 1 inch
Green chilli- 1
Curry leaves- few
Mustard- 1 tsp
Urad dal( ulundhu) – 2 tsps
Chana dal( kadalai paruppu)- 2 tsps
Red chillies- 4
Hing- a pinch
Salt to taste

Method

Peel, wash and chop onions.
Wash and chop tomatoes, ginger and green chillies.

Heat oil in a pan. Add mustard. When it starts spluttering, add urad, chana dal, ginger, curry leaves, green and red chillies. Sauté for few seconds and add
chopped onions and sauté till it becomes pink. Add the tomatoes and cook till it becomes soft. Take off the gas, cool and grind to a coarse chutney.