Mensho Tokyo is new (as of this writing) ramen shop located at 672 Geary Street, San Francisco, CA 94102. It is closed on Mondays and open every other day from 5 PM-11:30 PM or when soup runs out, whichever comes first.
I highly, highly recommend this place. I came very early (around 2 PM) in order to spend time drawing the place before I went in line. The line started filling up around (4 PM) and it extended a fair distance. I went in around 4:30 PM and was sat around 5:30 PM (it opens at 5 PM)
I had the toripaitan, a broth made with chicken bones and it was deliciously creamy and savory. The ramen is a little expensive though, but I highly recommend it.
Later that evening I raved about the place to my friends, who then wanted to check it out for themselves, so I then went again. Shows how much I love the place.