You'll encounter all of these in your first few days in Mexico:
Tortillas
The staple food of generations of ordinary Mexicans, tortillas can be made of flour (more common in the north) or maize (the traditional method and still the most common in the south). Often served alongside a meal as bread would be, tortillas are also used in many typical dishes - rolled and baked for enchiladas, fried for tacos or grilled for quesadillas.