Beef tongue (also known as neat's tongue or ox tongue) is a cut of beef made of the tongue of a cow. It can be boiled, pickled, roasted or braised in sauce. It is found in many national cuisines, and is used for taco fillings in Mexico and for open-faced sandwiches in the United States... peeling back the skin on a beef tongue. Tongue is commonly used to make Lengua tacos, where the meat is either cooked down into tender shreds or coarsely ...