After scoring a Krapfen (apricot-filled jelly donut) and Wiener Melange coffee, I was wandering down Mariahilferstrasse and was captivated by the sandwiches in the Duran sidewalk window. I returned around lunch time and did indeed find a Matjes herring sandwich (r)and an anchovie sandwich (l) as well.
With a glass of Grüner Veltliner white wine, this was just the right amount of food and nicely priced at € 4.60. The food is really so delicious and freshly made here in Austria. (And Germany and Spain on this trip)