Iced Rice Thai Style, Kao Chae - Recipes Kao is rice. Chae is soaking. Kao Chae is iced cold rice, eaten with rice foods and served in a very hot days of summer.1 cup old rice1 cup water5 cups cold jasmine scented waterSoak the rice in alum (or salt die substitution) water for at least 2-3 hours. Wash the rice well afterwards. This process... Similar Editorial : Iced Coffee by Sharon Price. | Source : Japanese Rice Recipe