Defari
Adept
I'm in the SF area for the next two weeks. Where is it located at?
If you're in the financial district there are a couple locations:
98 Mission between Spear and Steuart St
721 Market Street, between 3rd and 4th streets
There are other locations in SF outside of the financial district as well (it's basically a SF chain): http://www.superdupersf.com/contact.aspx
I might be sheltered, but super duper was the first place I saw the "egg on a burger" thing. A co-worker told me it's "Australian style" - whatever it is, it's awesome!
If you go around noon during the work week however, you may be in for a bit of a wait; it's quite popular among the financial district folk around noon...