The only restaurant I can remember being specifically named on the show was in ATAI when Clark suggested going to "Callahan's" (or something like that) for breakfast. But as such, it doesn't seem like it was her favorite or he wouldn't have asked it in the questioning tone he did.
How about Uncle Mike's restaurant in the South Side? I don't recall that it was given a name (you could check the episode) but she seemed to love his food and loved him, so it might be a good bet for a farewall dinner.
Kathy
