firstly, soak idli rice and methi for 6 hours.
in another bowl soak urad dal for 4 hours.
drain the water and blend to smooth batter.
now cover and rest in warm place for 8-10 hours.
scoop out the required batter and add in salt to the batter and mix well.
scoop the batter into idli moulds.
place the idli plate into steamer and steam for 10-12 minutes
to prepare dosa, pour a ladleful of batter onto the hot tawa.
spread gently and sprinkle oil.
cover and cook for a minute or more.
finally, dosas and idlis are ready to serve along with chutney and sambar.