However, as the raising awareness of people's health in recent days, fast food has been accused as one of the major harms to a healthy life. Fast food, usually serves with oversized hamburgers and fries, contains excessive fat, both trans fat and non-trans fat, causing serious illnesses such as obesity and heart diseases, and beverages, like cream soda and coke, contains overdosed sweetener, is one of the major reasons causing diabetic. Moreover, preservatives and flavour enhancers mixed into those frozen ingredients would significantly decrease the nutrition value of the meals.