Soak rice and daal together for 3-4 hours.
Grind soaked rice and daal with red chili ,green chili ,ginger and curry leaves and make a coarse and medium thick paste.
Take out the batter in a bowl and add salt, turmeric ,asafoetida,fresh coriander and mix well.
Now cover and keep aside for 3-4 hours, you can also make it instantly but resting time give best results.
Heat a non stick pan and spread a ladle full of batter over it and spread to make a round medium thick dosa.
Make 3-4 holes in it and drizzle some oil or butter and let it cook on medium heat.
When its done then flip it over and again drizzle some oil or butter over it.
Cook till adai become golden from both the sides.
Remove adai from the pan and serve hot.