TEX-MEX order is a combination of Mexican and Texan cuisine. It typically includes tacos, tortillas, and tostadas. A taco is a traditional Mexican dish consisting of a corn or wheat tortilla filled with various ingredients such as beef, pork, chicken, seafood, vegetables, and cheese. A tortilla is a thin, flat round bread made from wheat or corn flour. A tostada is a flat or bowl-shaped fried tortilla topped with various ingredients such as beans, lettuce, cheese, and salsa.