Specifications For Casserole Medium Handi 2.5 L. Pure Red Clay. Advantages For Using Casserole You Serve any Food stuff like Naan, Chapatti , Rice etc. Keeps body Fit. How to Use Before you start using Casserole, Just Wash with water and keep a side for one day to get it dry completely. Washing Method Washing Handi with water and leave with hot water for 10 minutes before washing. Use soft brush.