In a kadai heat some oil and ad mustard once it splutters add urad dal and chana dal and saute
Then add Red chili and curry leaves and saute and add a pinch of Asafeotida / hing and add shredded coconut and saute for a minute
Now add 2 cups water and salt and let it boil
Once it bubbles up simmer to low flame and add rice flour / idiyappam flour and stir well,
keep mixing continuously to avoid lumps
it will all come together soon So now cover and and simmer for 5 minutes
Now It will start coming together and form a mass now switch of the flame make sure the rice flour has cooked completely before steaming
Let it cool for sometime it should not cool completely it should be warm then apply oil in your hands and take a small ball size dough and keep it in your palm and press it.
Then steam those kozhukattai in steamer or idli plate for 8-10 minutes, once it is cooked it turns glossy
Kozhukattai is ready to be served