firstly, in a blender take 1 cup coconut.
also, add 1 tbsp roasted peanuts and 1 tbsp putani for hotel style texture.
additionally, add 2 petals onion, 2 green chilli, small piece tamarind and ½ tsp salt.
blend to a smooth or coarse paste adding ½ cup water or as required.
now prepare the tempering by heating 2 tsp oil.
once the oil turns hot add 1 tsp mustard, 1 red chilli and few curry leaves.
allow to splutter and pour tempering over chutney.
finally, serve hotel style dosa chutney with dosa or idli.