From its launch in 1968 to this year, McDonald's "Big Mac" has been born for 5 years. During the long development period, this burger is not only equipped with two or three floors (McDonald's has made 15 floors in many cases ... but it is of course one of the ways of brand marketing), especially for meat lovers, and it has become a cultural symbol itself.

Whether you are a McDonald's customer or not, or whether you will actually order it, "Big Mac" may be a dish name that you are familiar with-and speaking of it, the image of bread with layers of beef (which will be changed into other meat in some areas for religious reasons), lettuce, cheese sauce and other ingredients will naturally come to your mind.