Bratwurst, from "brat," meaning "without waste," and "wurst," meaning "sausage," are German sausages made of various scraps of beef, veal, and pork combined in a sausage casing.
There is some debate on the origin; Nuremberg claims the first written evidence dating to 1313, while Thüringen is home to a 600-year-old ingredient list for the sausage.
The sausage didn't make its way to America until the 19th century with the influx of German immigrants, and today, bratwurst is so popular you can find it almost anywhere.
In fact, bratwurst has since evolved to be an entire category of sausages, encompassing regional specialties like Kulmbacher, Würzburger, and Nürnberger rostbratwurst.