Le Creuset Fennel Cocottes with Cookbook, Set of 4 Companion cookbook with 25 mini cocotte recipes High-quality exterior enamel protects against metal marks and other damage Hard-wearing, impermeable finish fired at temperatures as high as 2192f is safe for cutting on with knives Unmatched thermal resistance from -65F to 500F  safe for the freezer, microwave, oven, broiler and dishwasher Less than 1-percent porosity, blocking moisture absorption which can lead to cracking, crazing and rippling along the interior