Corn tortilla

A corn tortilla is a type of thin, unleavened flat bread, made from finely ground maize (often called "corn" in the United States). The corn tortilla, with many variants, has been a staple food in North American and Mesoamerican cultures since pre-Columbian times. It is made by curing maize in lime water in a process known as nixtamalization which causes the skin of the corn kernels to peel off , then grinding and pre-cooking it, kneading it into a dough, pressing it flat into thin patties, and cooking it on a very hot comal(originally a flat terracotta griddle, now usually made instead of light sheet-metal).