Add salt anout 3/4 tsp and mix the batter well.
The batter should now have a pourable consistency like honey and not like water. If thick adjust by adding a bit of water.
Grease the moulds with oil and set aside
Set the steamer vessel with water.
Pour a ladle ful of batter in each mould (approximately 3/4th of the mould)
Set the moulds in the steamer
Bring the water in the steamer to a boil and steam for 10 minutes(15 if using ramikens)
Let the mould stand in the steamer for another 10 minutes ( motherin laws
's expert advice) this helps to unmould without tears.
Unmould the idly one by one by using a butter knife or a small flat spoon to loosen the edges.
Serve hot with chutney, sambhar or podi or all of these.