Masala Idli is a spicy and tangy version of the traditional idli. It is made by sautéing idli cubes with a tempering of mustard seeds, curry leaves, onions, and spices. The idli cubes are then tossed in a flavorful masala made with tomato, tamarind, and spices. Masala Idli is a great way to use leftover idlis and turn them into a delicious snack or breakfast option. It is usually served with coconut chutney or tomato ketchup.