Take one very thinly slice piece of veal or pork, coat in breadcrumbs, shallow fry and serve with fries and a squeeze of lemon. Be warned, they can be huge, often hanging off the plate so be hungry. The cheapest place to get filled up would be at Centimeter, I, II or III where you can get 2 large schnitzels, fries and salad for €6, (impossible to finish on your own unless you're nuts). Lenaugasse 11, Stiftgasse 4 and Bauernfeldplatz 2. They also serve 'giraffes' of beer and 'wheel barrows' of food for groups to share.