In a bowl, add suji and water. Mix well. Soak for 10-15 minutes.
In another bowl, add poha and buttermilk. Mix well. Soak for 10-15 minutes.
Add both mixtures to a blender. Pour ½ cup water. Blend to make a smooth batter.
Transfer it to a bowl.
Add rice flour, all-purpose flour, sugar and salt. Mix well.
Pour ½ cup water and mix again.
Heat tawa over a high flame.
Add eno/fruit salt and 1 tbsp water. Mix well.
Sprinkle water over the tawa and wipe it.
Apply oil with onion.
Pour a ladle of batter. Spread it to make a slightly thick dosa.
Let it cook on a medium flame until the top sets or becomes dry.
Then add butter and spread it over the dosa.
Cook for a few seconds.
Then flip and cook the other side for a few seconds.
Flip again. Fold and transfer to a plate.
Make the rest of the dosa in the same manner.
Instant benne dosa is ready!
Serve it hot with sambar and chutney.