in a large cast iron pan, heat 1 tbsp oil.
add 2 tbsp onion, ½ tsp ginger, 1 chilli and 1 tsp coriander. saute until the onion softens.
further add 2 tbsp tomato, 1 tsp curry leaves and saute until the tomato softens.
now add 2 tsp milagai podi and 1 tsp butter. roast until everything is well combined.
divide into 4 parts giving good space in between.
pour in a ladleful of idli batter.
also sprinkle some milagai podi, butter and coriander.
cover and simmer for 10 minutes or until the idli batter is cooked well.
now carefully flip over without breaking the idli.
roast on both sides until it turns golden brown and crisp.
finally, enjoy spot idli with chutney and milagai podi.