Sadya is a variety of vegetarian dishes traditionally served on a banana leaf in Kerala normally cooked on Onam ,weddings and special occasions.During a traditional Sadya celebration people are seated cross-legged on mats. Food is eaten with the right hand, without cutlery. A Sadya could have as many as 64 dishes.Some say the reason for including so many dishes in the Sadya is to ensure that the diners will like at least two or three dishes.The main dish is plain boiled rice, served along with other dishes collectively called Kootan , which include curries like Parippu, Sambar, Rasam, Pulisseri and others like Kaalan, Avial, Thoran, Olan, Pachadi, Mango pickle, Naranga curry, as well as Papadum, Banana, plain Yogurt or Buttermilk, and plantain chips. Usually three or more varieties of Payasam are served.
Just to give you an idea how it looks pls refer the below picture