Passable Ramen in Marin?
Hana Japanese Restaurant in Rohnert Park is in Melaine Wong's top 20. Report is from 2 years ago, though.
The Kakuni Ramen (only one available) still is on their online Lunch menu at the same $12 mentioned in the report.
Hana Japanese Restaurant
101 Golf Course Drive, Rohnert Park, CA 94928
Would love to find out as well, but I'm guessing we're sparse in this area. In fact, this past weekend, the kids and I drove down from Novato to San Jose to eat ramen at Santouka (we had to run errands as well, but still quite a drive!)
675 Saratoga Ave, San Jose, CA 95129