Sooji idli, a quick and simple tea-time snack that is low in fat, this is a perfect option for health conscious people. I’ve used low-fat curds to impart a nice taste and to make the idlis soft. For a wholesome evening snack of just 150 calories, serve three idlis with green chutney, page. . . . Make sure that you make the idlis as soon as you have added the fruit salt to the batter to ensure a fluffy product.