Aus dem Reiseführer Time Out Vienna: "The Würstelstand is the ideal location to hear dialect first-hand. Order a Bratwurst and you will be asked "Schoaf od´r sues", referring to the type of mustard you require: hot or sweet. If you´re not happy with your sausage, you should always complain with a provocative "Dis is a Schaas" (it´s crap).