Frankfurter Rindswurst (German for “Frankfurt beef sausage”) is a sausage

Sausage

A sausage is a food usually made from ground meat , mixed with salt, herbs, and other spices, although vegetarian sausages are available. The word sausage is derived from Old French saussiche, from the Latin word salsus, meaning salted.Typically, a sausage is formed in a casing traditionally made...

 made of pure beef meat. It was introduced in 1894 by Frankfurt butcher Gref-Voelsing to meet the demands of the growing Jewish population of the city and has since become one of its most famous delicacies. The sausage may be boiled, or broiled or grilled.