Any suggestions on local, non-touristy places to eat in Zurich? I don't need anything fancy, just good Swiss food. I speak and read enough German to get by in a restaurant, so that's not a problem. I'll be staying near ETH, but anywhere from there to the city center is okay, too.
P.S. Is it a major faux pas to order a cheese fondue for one? I'm traveling by myself, but really love fondue.