If you've been to the bay then you have heard of Kevin's Noodle House. Over the years Kevin's Noodle House has expanded into a chain and quality has stayed the same.
There are a couple places named Perilla around San Francisco, but the one I'm talking about is on Irving. They are pretty busy around lunch and dinner time with the typical waiting time of 30 minutes or less.
A classic in San Francisco with three locations in Civic Center, Richmond, and Soma. Thier speciality is the broth. Crafted from their family recipies from genorations before.