"Unpronounceably good" is the (correct) motto of this tiny sandwich shop, a Viennese tradition for decades. If a quick snack will suffice, three or four of the open sandwiches and a Pfiff (1/8 liter, or 1/10 quart) of beer, or a vodka, may be just the needed pickup. Share one of the few tables, or stand up at one of the counters. Many customers are very elegantly attired.