1. the removable type composite bottom stainless steel inner pot is beautiful and durable. 2. the stew inner pot is made of high-quality and exquisite pottery, equipped with double lids for inner and outer airproofing. cook foods with the traditional water-secluded steam & stew method. hence to make the ready-made tonics retain their original delicious flavors. 3. multipurpose cooker. besides braising tonics, cooking soups, cooking congees, moreover, it can be used for steaming, stewing and so on, hence the purposes are very wide.