Firni are cooked in a variety of ways, which is a Firni with rice flour and Firni with starch the most famous of it. Of course porridge is a tasty food for children. Firni can be used as a sweet snack. Firni is one of the most famous and popular Persian Iftars that is being prepared in Ramadan. Served in both warm and cold form, each with its own fan. To sweeten this dessert, you can use grape jams or juice instead of sugar.