Menya Kissou (Kiba: Ramen)
Open 11:30am-3pm. Closed Sundays, Wednesdays.
Ranked the number-one bowl of ramen in Tokyo by many critics and popular surveys, the nine-seat Kissou is open only for lunch, when the long lines can take more than an hour. The broth is a light tonkotsu-gyokai blend, and the egg topping is highly recommended. There's a choice of either standard ramen or tsukemen.
Koto-ku, Toyo 1-11-3.