Onion - Tomato Pachadi for Idly / Dosa

Ingredients 

Tomato ( chopped)  : 3 nos
Onion ( chopped)   : 1
Red chilly powder  :1 tsp
Turmeric powder   : 1/4 tsp
Oil              : 1 tbsp
Salt 
Mustard seeds
Curry leaves

Method

Heat oil in a kadai,add mustard and curry leaves.
Wait till mustard crackles,add chopped onion and fry.
Add chopped tomato and salt now and mix.
Put red chilly powder now and cook on low flame till oil comes out separately.
Serve with idly / dosa...