The primary ingredient in a traditional Margherita pizza is tomato. This classic Italian pizza celebrates three essential ingredients that represent the colors of the Italian flag: red (tomato), white (mozzarella), and green (basil). The tomatoes used are typically San Marzano, known for their sweet flavor and low acidity, which enhances the overall taste of the pizza. The simplicity of the ingredients allows for a focus on quality, making Margherita pizza a beloved choice worldwide among pizza enthusiasts for its authentic and flavorful profile.