This thesis brings together three topics that we want to search: brand communication, gastronomy, metaphysics. After completing my master’s degree in marketing communications, what I always had in mind was the new trends in advertising communication with the globalization of the 21st century. In the design of the advertisement, not only the use of elements in communication technologies, but also the philosophical background in its fabric attracted my attention. In this context, I began to sense that there might be mythological approaches in the chemistry of advertising messages that gained importance in social media. In the postmodern environment of the 21st century, food/nutrition, culinary arts and, to put it briefly, gastronomy became the dominant language of communication. Moreover, it caused kitchen wars by becoming politicized. In line with my interest in gastronomy, I wanted to focus on food advertisements. I started to ask myself to what extent the fast-food trend that marked the 21st century was changing the Global Society. Interestingly, I started to observe that there were metaphysical images that were reflected from ancient wisdom to the present day in McDonald’s brand communication. This problem, which has not been studied much yet, was an important exercise for me in terms of analyzing the Global Society as a doctoral thesis. I can say that doing the analysis in the light of semiology as a method has broadened my horizon by directing me to an interdisciplinary perspective. I would like to acknowledge Communication Sciences and the Internet Institute, which allowed me to make such a significant study, Prof. Dr. Mete Çamdereli, who supported me with great excitement in all phases of my thesis, Prof. Dr. Emine Yavaşgel, who made great contributions to deepen my research subjects in the monitoring of the thesis. In addition, I would like to thank Prof. Dr. Mim Kemal Öke, from whose suggestions I benefited in the historical context. I am also indebted to my colleagues and friends, especially my family, who buoyed me up and supported me during the research and writing process of my thesis, which lasted more than 2 years. I hope this study will be useful and inspire new studies in this field.