Combine rava, yogurt and water in a bowl and keep it aside for 15 to 20 minutes.
After 15 to 20 minutes, add all the other ingredients(except oil) , mix it well. Add enough water and get this batter to idli batter consistency.( I have used little more than 1 1/4 cup of water)
grease and heat the tava on medium heat.
Before making the rotti keep a bowl of water ready to dip the fingers while making the rotti.(please watch video for the procedure)
Once the tava is hot, mix the batter once again and pour a ladleful of batter in the center,
start spreading the batter to make a circle. dip your fingers in cold water while doing it
put some oil on top and around the edges , cover it and cook it for 1 to 2 minutes.
flip the rotti and cook it on the other side as well. put some oil if you like.
Once the rotti is cooked well on both sides, take the rotti out from the tava and Serve.
repeat the same procedure with the remaining batter.
serve with chutney, sagu, curd....