The containers are made of stainless steel, the trays for rice and soup are made of plastic.

The current model has stainless steel containers, but the small inner trays are made of black plastic. However, you can also use your own heat-resistant bowls. The previous model had plastic containers.

Hello, I have been using this part regularly for about 2 years and have never noticed any plastic taste. However, you can also use your own ceramic bowls instead of the plastic ones. I am very impressed with the product because each cooking chamber can be used separately and because I can run it so that all parts are ready at the same time.