Often added to the idli batter, fenugreek seeds aid in the fermentation process and contribute to the characteristic flavor of idlis
Salt
Salt is added to enhance the taste of idlis and balance the flavors in the batter
Water
Water is used to soak the rice and dal before grinding and to adjust the consistency of the batter.
Ghee or Oil
A small amount of oil or ghee is sometimes used to grease the idli molds before pouring the batter.
Baking Soda
Some recipes call for a leavening agent like baking soda or Eno fruit salt to aid in the fermentation process and make the idlis softer and fluffie
Curry Leaves
Curry leaves are often added to the batter or used as a garnish to impart a subtle flavor to the idlis.
Mustard Seeds
In some variations, mustard seeds are tempered in oil and added to the idli batter to enhance the taste.
Optional Ingredients
Other ingredients like grated carrots, chopped cilantro, grated coconut, or green chilies may be added to the batter to customize the flavor and texture of idlis.