Idly rice is a variety of parboiled rice that has been specially processed to have the right texture and consistency for fermenting and steaming. It is short-grain, starchy, and absorbs water well, making it ideal for smooth, fluffy idlis. Typically soaked and ground with urad dal (black gram), idly rice helps create a light, spongy batter that ferments well, ensuring soft and airy idlis. It can also be used to make dosa, uttapam, and other South Indian delicacies.