This article studies the importance of the Mediterranean diet in the menus of restaurants in the city of Barcelona. It is based on a review of previous studies about the great influence of the Mediterranean culture on daily aspects such as food. A qualitative study was conducted and a sample of experts head chefs at restaurants in Barcelona was selected. The results show that the Mediterranean diet is positioned in the minds of their customers; therefore, all the decisions related to the purchase of products and the planning of menus and dishes are made following the guidelines of the Mediterranean diet. This study is an important contribution to the research field of culture in consumption habits, because it confirms that the Mediterranean diet still is strongly preferred over new foods, dishes and foreign menus. The habits of consumers remain true to their culinary traditions.