I am a popular dish in South India, often eaten for breakfast. I'm made from a fermented batter and cooked on a griddle. I can be served with various accompaniments. What am I?

1. I am a type of pancake or crepe.
2. My batter typically contains rice and lentils.
3. I am often served with sambar and chutney.
4. I can be plain, or with added vegetables or spices.