The main ingredient in a traditional omelet is eggs. Eggs serve as the foundation of an omelet, providing structure and richness when cooked. To create a classic omelet, eggs are beaten together and poured into a heated skillet, where they are gently cooked until set. Various fillings, including cheese, vegetables, and meats, can be added for flavor and texture. The omelet is then folded over, allowing the fillings to meld with the egg. This versatile dish can be prepared in numerous ways, catering to different tastes and dietary preferences, making it a popular option for breakfast or brunch worldwide.