Tsukemen TETSU Keio Mall Shinjuku is a ramen shop in Tokyo that serves tsukemen and chuka soba. It sits inside Keio Mall, directly connected to Shinjuku Station. Customers buy a ticket from the vending machine and then take a seat at the counter, and the tsukemen comes with thick straight noodles. Even when a line forms, the wait is at most about 15 minutes, and food arrives about 5 to 10 minutes after ordering; the tsukemen broth is salty, so the amount of dipping should be adjusted.