To be used with idly steamer for spongy and soft idli
A wet cloth is spread over the idli molds in steamer to prevent the water in the batter from dripping through the holes of the mold and also make it easier for the steam to pass through the batter smoothly to cook the Idly.
When the Idly is removed from the cloth, the bottom layer which had contact with cloth is peeled. This makes the Idly retain a smooth texture.