1. Soak washed rice and aval together in buttermilk overnight.
2. In the morning, drain the excess buttermilk if any and grind to a smooth batter, a little thinner than the regular idly dosa batter.
3. Add salt (2 tsp) and cooking soda and mix well.
4. Heat a tawa and pour a ladle full of batter and drizzle oil; don`t spread the batter.
5. Cook covered over a medium flame for a minute.
6. Super soft spongy dosa is ready to enjoy!
7. Serve with a spicy chutney.

Recipe courtesy: Rak`s Kitchen