Classic Uttapam is a popular South Indian dish made with fermented rice and lentil batter. It is typically topped with finely chopped onions, tomatoes, green chilies, and coriander leaves. The batter is prepared by soaking rice and lentils overnight, then grinding them to a smooth consistency using a food processor. The batter is then fermented for a few hours to develop a tangy flavor. Once the batter is ready, it is spread on a hot griddle and cooked until golden brown. Serve hot with coconut chutney and sambar for a delicious breakfast or snack.