Ajisen Ramen shows up in most HGH food guides, but T4-specific info is thin, so treat this as a “you might find it” option rather than a guaranteed stop. Listings put Ajisen somewhere airside at Hangzhou Xiaoshan, yet current maps don’t clearly label a branch inside Terminal T4, and there’s no confirmed gate number or posted hours.
What you can count on: Ajisen is the same Japanese ramen chain you see across China and in some other airports, with tonkotsu-style bowls, chashu pork, and karaage sides. At city branches in Hangzhou, a basic ramen runs roughly ¥40–¥60, so expect similar or slightly higher airport pricing. If you spot it in T4, plan on a quick-service setup: order at counter, food out in under 10–15 minutes, and then straight back toward your T4 security lanes and gates.
Menus at Ajisen usually list a dozen-plus ramen varieties by number and picture, including spicy options and miso-based broths. In China, most locations also pour standard soft drinks and sometimes Asahi or local beer in the ¥20–¥40 range. Vegetarian choices tend to be limited to one or two bowls built around vegetables and egg, and add-ons like extra noodles or extra pork generally cost another ¥8–¥15 per topping.
Because there’s no confirmed opening schedule for a T4 branch, don’t bank on Ajisen for a 06:30 departure or a midnight arrival. In downtown Hangzhou, many Ajisen stores run roughly 10:00–22:00, and airport outlets in China often track a similar 10:00-ish to last-evening-wave pattern tied to flight banks. If your T4 flight leaves before 09:00 or after 22:00, assume you’ll need a backup plan in the terminal.
Practical tip: once you clear security in T4 at Hangzhou Xiaoshan, check the terminal directory screens or ask at the nearest information desk specifically for “Ajisen Ramen” by name before you commit to hunting for it; if they can’t point to a gate zone, pivot quickly to another T4 restaurant instead of wandering the concourse.