Onam is a festival celebrated by Malayalis in Kerala or in any other part of the world to mark the homecoming of the Great King Mahabali.
The festival lasts for ten days and is celebrated with a great splendour.
Sadya is the traditional nine or more course vegetarian meal served on banana leaf.
According to Hinduism, Mahabali was the great-great-grandson of a Brahmin sage named Kashyapa, the great-grandson of a demonic dictator, Hiranyakashipu, and the grandson of Vishnu devotee Prahlada.