Ingredients:
Dry Red Chillies - 8
Sambar Onions - 1/2 cup, chopped
Tomato - 1, finely chopped
Salt as per taste

For Tempering:
Oil - 1 1/2 tblsp
Mustard Seeds - 1/2 tsp
Asafoetida Powder - 1/2 tsp
Chana Dal - 1 tsp

Method:
1. Heat oil for tempering in a frying pan over moderate heat.
2. Add remaining ingredients for tempering.
3. When mustard seeds start spluttering, add red chillies and fry for 1 minute.
4. Add sambar onions and fry for 1 to 2 minutes.
5. Add tomato and fry till well blended.
6. Sprinkle in salt and grind to a paste with 2 tblsp of water.
7. Serve with dosai or idli.