Classic Appam is a popular South Indian dish made with fermented rice and coconut batter. It is a soft and fluffy pancake with a crispy edge. To make Classic Appam using a food processor, start by grinding soaked rice and grated coconut together to form a smooth batter. Ferment the batter overnight and then cook it in a special appam pan. Serve hot with coconut chutney or vegetable stew.