細菌理論上4-60 degree Celsius 會高速繁殖
https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/danger-zone-40f-140f#:~:text=Bacteria%20grow%20most%20rapidly%20in,called%20the%20%22Danger%20Zone.%22&text=Never%20leave%20food%20out%20of%20refrigeration%20over%202%20hours.