The tortilla is made from specially treated (nixtamalized) maize flour, which has been a staple food of the Mexican region since pre-Columbian times; these are also now commonly made from wheat flour (tortilla de harina or tortilla de trigo). The maize and wheat Mexican tortillas have different textures: the maize (corn) version is somewhat thicker and heartier in texture, while the wheat version is less easily broken due to its high gluten content, and can be made larger in circumference and thinner without breaking too easily.