Versatile and practical, Nigella Lawson's Flameware products are made from a unique ceramic material that can be used on direct heat, in the oven, the microwave, the freezer, and of course on the table for serving. Lighter than traditional stoneware, Flameware has been designed to retain heat so when handling please use oven gloves. Flameware also has special energy saving properties as when the food in the cookware has reached the required temperature the heat can be reduced as it will retain the same temperature with less energy