The article discusses the importance of balance in cooking and how it applies to the Cuban sandwich. It mentions the various contrasting elements of the sandwich, such as Cuban bread, ham, cheese, roasted pork, pickles, and mustard. The addition of mayonnaise is suggested to enhance the sandwich further, as it acts as a culinary bridge, providing a velvety texture and subtle richness that connects all the flavors seamlessly. Different types of mayo, such as Japanese Kewpie mayo and Duke's mayo, are recommended for unique flavor profiles. Additionally, spreading mayo on the exterior of the sandwich before cooking creates a delicious, well-browned crust.