Tacos de bistec are a popular Mexican dish consisting of small, soft corn or flour tortillas filled with seasoned and grilled beef steak, typically chopped or sliced.
The beef used is often a tender cut such as sirloin, ribeye, or skirt steak, marinated and cooked to bring out rich flavors. These tacos are commonly garnished with onions, cilantro, and a squeeze of fresh lime juice, and might be served with various salsas or guacamole on the side.