Stainless steel cutlery contains trace metal elements such as manganese, titanium, cobalt, and molybdenum. These are indispensable trace elements for the human body. The human body cannot synthesize by itself and must be taken from the outside world. If the human body lacks one or several trace elements, it will suffer from many diseases. Foods cooked with stainless steel cutlery can be used by people to obtain these trace elements.