1 - mix all the ingredients mentioned above except oil.keep aside for 30 to 40 minutes.heat the tava or non-stick pan. spread 1 or 2 tsp oil.if using non-stick pan then no need to spread oil.with a ladle pour the batter from the edges towards the center.sprinkle ½ or 1 tsp of oil from the top.let the base becomes golden or crisp. flip and cook the other side.when both the sides are cooked, remove the dosa from the pan. prepare all the dosas this way.serve the rava dosa hot with coconut chutney.rava dosa has to be served immediately.otherwise they become dry once they become cold.rava dosa is best had when they are hot.