The primary ingredient in nachos is tortilla chips. These chips are typically made from corn tortillas that are cut into triangles and fried or baked until they are crispy. Nachos are often served with a variety of toppings, such as melted cheese, jalapeños, guacamole, salsa, sour cream, and various meats or beans. They originated in Mexico and have become a popular snack or appetizer in many countries, especially at sporting events and parties. The combination of crispy chips and flavorful toppings makes nachos a beloved dish enjoyed by many.