Aluminum alloy liner and black liner with non-stick coating have good heat transfer uniformity, which is very suitable for cooking and easy to clean. White stainless steel liner is generally recommended for soup, stew, stew and so on. Because this kind of liner has the characteristics of durability and no deformation (some electric pressure cookers are yellow and can be distinguished according to the instructions).
Generally, it is not recommended to mix electric pressure cooker liners, because each liner has its own different characteristics and functions. Non-stick pan liner is used for cooking, stainless steel liner is used for stewing soup, and stainless steel liner will stick to the pan when cooking. If you don't stick to the pot, the soup is not so delicious, so it's better to separate it.