Each city names it after the other: in Austria it's sold as a 'Frankfurter,' while Germans call the same sausage a 'Wiener.'
A smooth, finely emulsified pork-and-beef sausage in a thin natural casing is gently poached and served hot in pairs with mustard and a bread roll. Vienna's countless Würstelstand kiosks sell them around the clock, from lunch crowds to post-opera night owls.