Idli or Idly is a savory cake popular throughout South India. The cakes are usually two to three inches in diameter and are made by steaming a batter consisting of fermented black lentils (de-husked) and rice. The fermentation process breaks down the starches so that they are more readily metabolized by the body.
Most often eaten at breakfast or as a snack, idlis are usually served in pairs with chutney, sambar, or other accompaniments. Mixtures of crushed dry spices such as milagai podi are the preferred condiment for idlis eaten on the go. In addition, idlis have been considered one of the top ten most healthiest foods in the world due to the ingredients it is made from.-Wikipedia