Classic Appam is a popular South Indian dish made with fermented rice and coconut batter. It is a soft and fluffy pancake with a slightly tangy and sweet taste. The batter is made by grinding soaked rice and grated coconut, which is then fermented overnight. The fermented batter is then poured into a special appam pan and cooked until golden brown. It is usually served with coconut milk or a variety of curries like vegetable stew or chicken curry.