Soak the red chilis in normal water for 10 minutes.
You can put the tamarind also along with this if you want.
In a mixie jar, add the pottukadalai, coconut, garlic cloves, salt and the soaked red chilis.
I forgot to add tamarind and so added in the last.
Grind this into a smooth paste.
Transfer this to a bowl and add little water to adjust the consistency.
In a pan add oil and temper with mustard seeds and curry leaves.
Add this to the chutney.
Serve with hot idlis or dosais.