Removing stains from a Kadai is a piece of cake as it requires nothing but aluminum foil with a dishwasher detergent. Pour warm water in the Kadai and add a few drops of liquid dishwasher detergent into the water. Mix the solution thoroughly using a spoon and sit for a while. After that, crumble a piece of aluminum foil in the shape of a ball. Start scrubbing the Kadai with the ball of crumpled aluminum to get rid of all the stubborn stains quickly and in an instant.