This is the Nakagawa Masashichi Shoten, Kamoshika Doguten San-toku Nabe (three-function pot). Made of ceramic, it continues to simmer for a while even after the heat is turned off after boiling. I love Nakagawa Masashichi Shoten products and have collected and used many of them. This is one of them. I have actually used it, but I didn't use it for boiling oily foods or as a frying pan, so it's in very clean condition. I used it especially for steaming. The only thing that bothers me is a little blackening on the bottom of the pot where the gas flame hit it. (Please check the photos.) I'm moving, and my new place has an IH stove instead of gas, so I found out that I can't use this product. I loved it so much that I hate to throw it away, so I'm offering it to someone who can use it. Please consider it. --- Black ceramic steamer and dish set. - Color: Black - Material: Ceramic - Type: Steamer and Dish Set - Features: Includes a perforated insert for steaming Thank you for looking.