The primary ingredient in traditional tacos is the tortilla, which serves as the base for the fillings. Tortillas can be made from corn or flour, depending on regional preferences. Tacos are versatile and can be filled with various ingredients, including meats such as beef, chicken, pork, or seafood, as well as vegetables, beans, and cheese. Common toppings include salsa, guacamole, onions, cilantro, and lime juice. Tacos originated in Mexico and have become a beloved dish worldwide, celebrated for their adaptability and the ability to customize them to suit different tastes.