Add chopped avocado, freshly grated coconut, roasted gram, green chillies in your mixer grinder and coarsely grind it.
Transfer the content in a bowl, add salt and mix well.
Add oil in a small frying pan. When oil is warm, add mustard seeds and let it splutter.
And asafoetida and curry leaves and saute for few seconds.
Add this tempering in the bowl and mix.
Serve this chutney with idli or dosa.