Grind rice coarsely like rava . Heat oil and Roast red chillis. Add mustard seeds. Whn it pops add urud dal and gram dal. When they are roasted curry leaves and crated coconut and roast slightly. The coconut should not become too red. Add 4 cups of water and salt to this mix and bring it to boil. Add the rava and stir untl it is cooked well and themix becomes thick. When it is hot and when the hand can withstand the heat make this mix into a desired shape. Place these shapes on idli plates inside a cooker and steam them.