In a mixer jar add rava.
Add maida, yeast, sugar and salt as required.
Pour luke warm water and grind it for 1 minute. The batter should be watery than the dosa batter.
Now pour this batter into a bowl and let it rest for 15 minutes. After 15 minutes you can see the batter has risen well.
Now heat a tawa and pour a ladle full of batter. Do not spread it. It should spread by itself. That is the consistency. While pouring the batter keep the flame to medium high. You will see lots of pores forming on the appam. Now reduce the flame to low and close the lid. Let the appam cook for a minute.
Open the lid and the appam is cooked well. Serve hot with coconut milk, chicken stew or any other veg or non veg gravy of your choice.