Tacos are the Mexican equivalent of a sandwich. Instead of bread, a hard or soft tortilla is wrapped or folded around a tasty filling. The conquistador Cortez mentioned a meal prepared with tortillas as far back as 1520. The tacos at a truly authentic Mexican restaurant will differ from what might be found at an Americanized restaurant. The meat options will typically be “pollo,” which is chicken, “pastor,” which is pork, or “barbacoa,” usually made with beef.