I will be in San Francisco in October, doing some of the top-end places for dinner (Quince, Saison, Coi...). As I already have big menus and probably formal atmosphere in the evenings, I would like to have lighter/shorter lunches in a more casual setting, but of top food quality nevertheless. Problem is: all the great restaurants seem to be closed for lunch. Japanese/Sushi would have been great - dinner only, at most of them.
So: any recommendations? The style of cuisine is secondary. I am looking for intriguing/unusual food. For lunch. Can also be a truly great burger joint or some outstanding chinese dumpling bar.