For idli batter :-Soak rice and dal overnight in morning water should be drain out now grind it in the mixer separately with curd and water now mix it and keep aside for ferment for 6 hours now in a batter add salt oil baking Soda and stir it well. transfer batter directly to idli mould and stream for 5 minutes.Your idli is ready

For sambhar :- Boil tuver dal in pressure cooker cool it then blend it again after 1 boil switch on the gas add salt haldi,mirch powder, adarak imli pulp now add gourd, potato, drumstick in another pan add oil mustard seed methi dana dry lal mirchi kadhi patta hing,long add sambhar masala now add onion stir it add tomato and let it boil.Then pour tadka and boil it for 5 to 7 mins on slow flame,at last garnish with Coriander leaves.