Update:
We couldn’t wait to go back to Mensho Tokyo to try more of their Ramen offerings, which was another restaurant that we had a good experience with last time. We were also hoping that Chef-Owner Tomoharu Shono might have added a new (unique) flavor on the menu, since he’s made so many different bowls at his restaurants in Japan.
Shio Ramen (Clear Chicken and Pork Soup, Shio Dare, Pork Chashu, Kale, Menma, Fried Garlic, Chives, Nori):
Mensho’s Shio Ramen (Salt-based Ramen Broth) tastes of a clean Torigara (Chicken Bone) and Tonkotsu (Pork Bone) base, but it’s a bit funkier and porkier than what we were expecting, however it’s still delicious. 
Their Chashu Pork Slices remain consistently great: Even approaching 2 years since their opening, the Chashu is meltingly tender, very fresh and just fantastic! 
Their Noodles have a good chew to them, while still being sufficiently tender and matches the Shio Broth pretty well.
Spicy Lamb Ramen (Rich and Creamy Miso Soup, Pork Chashu, Green Onion, Nira, Menma, Ground Lamb):
While their Shio Ramen was pretty tasty, it’s their Spicy Lamb Ramen that captured our taste buds on this visit. While you can taste a strong Miso base and influence, it’s incorporated into an incredible, lively Spicy Lamb Gravy along with some fragrant seasonings (Cumin, maybe some Garam Masala even), to give it a very exotic, unique taste.
On this chilly night, the Spicy Lamb Ramen was gamy, spicy, fragrant and warming. I’ve never had anything like this for Ramen before, and it shows Shono-san’s creativity and understanding of flavors (it’s well-thought-out).
The Pork Chashu was as fantastic as the previous bowl, and it’s encouraging to see Mensho not cut any corners, despite its popularity.
The Noodles used here were a thicker Ramen Noodle, not quite Udon heftiness, but almost like the fatter Noodles in some Tsukemen (Dip Ramen) preparations. It matched the Spicy Lamb quite well, standing up to the flavors.
The wait is still crazy. As @beefnoguy warned, we showed up at prime time dinner hour and waited about 45 minutes or so, but it was worth it considering the quality of the Ramen we got.
Mensho Tokyo continues to deliver some great bowls of warming, high quality Ramen that’s worth a try. I liked the Shio (Salt) Ramen on this visit, but the Spicy Lamb Ramen was really unique and even tastier. Overall, my favorite is still their fantastic Shoyu (Soy Sauce-base) Ramen, which just had a lightness that gets away from the popular-dominant, heavy-fatty Tonkotsu Ramen offerings that seem to remain so popular in California.
From the clear delicate Soup, to the custom-made Noodles for Mensho, to the outstanding, tender, fresh Chashu, to the accompanying veggies, Mensho Tokyo is just an outstanding Ramen-ya making fantastic Tokyo-style Shoyu Ramen (and a great Tori Paitan, Shio and that Spicy Lamb Ramen) that I hope one day branches out to Los Angeles.
Mensho Tokyo
672 Geary Street
San Francisco, CA 94102
Tel: (415) 800-8345