Skirt steak is a flavorful and versatile cut of beef that comes from the diaphragm muscles of the cow. It's known for its intense beefy flavor, distinctive long, thin shape, and coarse texture. Skirt steak is popular in many cuisines and can be cooked using various methods, making it a favorite choice for grilling, searing, or slicing thinly for use in dishes such as tacos or fajitas.