Nothing quite says Austria like a schnitzel bigger than your plate and Almdudler to wash it down.
We had the brilliant idea of eating a lunch so big that we wouldn't need dinner, but ending up getting dragged out for ribs that night. I have never been so close to exploding.
Figlmuller is famous for it's giant schnitzel and traditional Austrian fare, in the heart of Vienna. It's possibly a little touristy, there weren't many others there when I went so it's hard to tell, but it was yummy food and it wasn't expensive.
You probably shouldn't eat breakfast and you won't want to eat dinner afterwards.