Tacos are a popular Mexican dish that consists of a tortilla filled with various ingredients. The tortillas can be made from corn or flour and are filled with ingredients such as seasoned meat (such as beef, chicken, or pork), beans, cheese, lettuce, tomatoes, and salsa. Tacos can be customized to suit individual preferences and can be topped with additional ingredients like guacamole, sour cream, or cilantro. They are quick to assemble and make for a delicious and satisfying meal.