- firstly, in a large bowl take 1 cup idli rice. you can alternatively use any raw rice. 
- also add ¼ cup poha and soak for 4-5 hours. 
- now transfer the soaked rice and poha into the blender. 
- additionally, add 1 cup coconut. 
- blend to smooth batter adding water as required. 
- now add 1 tbsp sugar and 1 tsp dry yeast. refer the packaging instruction to activate yeast. 
- mix well making sure everything is combined well. 
- cover and ferment the batter for 8 hours. 
- now mix the batter gently, make sure the batter is flowing consistency. 
- further, add ½ tsp salt and mix well. 
- also, heat the griddle and pour a ladleful of batter. 
- spread out in a circular motion slightly thick than regular masala dosa. 
- cover and roast the dosa to a golden brown from the bottom and completely cooked from the top in presence of steam. 
- finally, enjoy vellayappam with chutney and veg stew.