Firstly, Mix Corn rava, rice flour sour curd, salt and water to a thick batter.
close and let it rest for an hour.
To this, add coconut pieces, red chilli, ginger and grind it to a coarse paste.
transfer to a bowl and add cumin seeds, asafoetida and mix well.
heat and grease dosa tawa. pour a ladleful or two of batter into dosa pan and spread into thick small uttapam.
grease with coconut oil all over the sides
top it with small onions and coriander leaves.
close and cook for a while (1/2-1 minute)
open and turn side.
cook for another 1/2 minute. serve fresh and hot with chutney of your choice.