Waterless portable precision heating device

A waterless portable precision heating device for even heating,

• comprising:
• an ingredient container to contain a food-related, a health-related, or a crafting-related ingredient;
• a thin heating element configured to surround and contact the ingredient container in a manner that maintains a first threshold temperature of over 100° C. in the ingredient container without use of liquid or pressure and ensures that the temperature does not increase beyond a second threshold temperature that may damage the contents contained within the product container, wherein the second threshold temperature is at least 105° C.;
• an insulation layer configured to surround and contact the heating element in a manner that reduces thermal transmission from the outer shell of the device to the environment;
• an outer shell surrounding the insulation layer;
• a lid that encloses the product container and fluidly seals it from the environment;
• at least one sensor configured to detect the temperature of the device;
• and
• a circuit board with a controller that controls the heating of the heating in response to signals received from the at least one sensor indicating whether the product container has reached the first threshold temperature.