# Inaniwa cold udon lunch at Gapposo, a Gasan Japanese restaurant - By Haeun (https://superchart.com/en/@seoul-lunch-crossing/) - Written Sep 5, 2026 - Local places › Restaurants › Geumcheon, Seoul - Sponsored: This post was written as a paid in-store visit sponsorship. - English edition: https://superchart.com/en/@seoul-lunch-crossing/gatposo-gasan-inaniwa-cold-udon-lunch/ - Also in: [한국어](https://superchart.com/ko/@seoul-lunch-crossing/gatposo-gasan-inaniwa-cold-udon-lunch/index.md) ## In short Gapposo is a Japanese restaurant on the 1st floor of Hyundai Terra Tower Gasan DK by Gasan Digital Complex Station in Geumcheon, Seoul, with a menu that runs from lunch omakase and business courses to rice bowls and soup dishes. Booking ahead with a coworker, the writer sat down with no wait and ordered the Gapposo aged assorted sashimi at 28,000 won per person and Akita inaniwa cold udon at 15,000 won. The savory depth of the aged sashimi, the thin, firm inaniwa noodles and the thinly battered shrimp tempura all made the reserved lunch worth it. ## Good to know - **Location**: Unit 106, 1F Hyundai Terra Tower Gasan DK, 144 Gasan Digital 2-ro, Geumcheon-gu, Seoul - **Gapposo aged assorted sashimi**: 28,000 won per person - **Akita inaniwa cold udon**: 15,000 won - **Lunch menu**: Lunch omakase, lunch business course, bento set - **Dinner courses**: Set courses from the 33 Gat course to the 95 omakase course - **Reservations**: Booked tables are set in advance with a reserved sign *as written by the visitor on Sep 5, 2026* Gapposo is right in front of my office, so it's a go-to Gasan Digital Complex Japanese restaurant I hit up for company dinners and also often for lunch. Since I go so often, this time I actually made a reservation with my work buddy and went for a proper meal. ![Entrance of Gapposo, a Japanese restaurant near Gasan Digital Complex](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-01-u6nzz-966.webp) > Gapposo ## Gapposo by Gasan Digital Complex Station: book ahead and skip the wait Since I'd made a reservation, they had already set up our table with a reserved placard, so we could sit down and eat right away with no waiting. That kind of thing is surprisingly handy during a busy lunch or a company dinner. ![Gapposo table with a reserved-seat placard](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-02-15qp8-966.webp) ![Interior seating at Gapposo](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-03-xsrw6-966.webp) > The menu is so varied it works for lunch, business meetings, and company dinners alike ![First page of the Gapposo menu](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-04-oli0z-966.webp) ![Gapposo lunch course menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-05-t5a58-966.webp) ![Gapposo dinner course menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-06-1t2mz-966.webp) ![Gapposo hot pot and soup menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-07-jfltz-966.webp) ![Gapposo donburi menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-08-17mat-966.webp) ![Gapposo sashimi menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-09-8l05v-966.webp) ![Gapposo a la carte menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-10-1kj9b-966.webp) ![Gapposo drinks menu page](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-11-1srf9-966.webp) ## What is on the menu at Gapposo? The reason I call Gapposo a Gasan Digital Complex favorite is exactly this: the sheer range of the menu. Everything from a light lunch to a full-on course meal is covered. - Lunch omakase, lunch business course, bento set - Dinner set courses (33 Gat course to 95 omakase course) - Hot pot dishes like clam soup, Nagasaki nabe, sukiyaki - One-bowl dishes like kaisendon, unagidon, salmon donburi There are a lot of donburi-style dishes you can finish as a single bowl, so it works whether you're eating lunch solo or having a course with a group. With omakase and business courses on offer too, it holds its own as a spot for client meals or business dining in Gasan. That day we ordered the Gapposo aged assorted sashimi at 28,000 won per person and the Akita-style inaniwa cold udon at 15,000 won. ![Table spread of the dishes ordered at Gapposo](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-12-mkrg6-966.webp) ## Gapposo aged assorted sashimi, 28,000 won per person > Aged, yet fresh and varied — the Gapposo aged sashimi platter ![A full plate of Gapposo's aged assorted sashimi](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-13-vbh64-1200.webp) Gapposo's signature is that the chef ages the sashimi himself using salt, kelp, soy sauce, doenjang (fermented soybean paste), vinegar, rice koji, and the like — and despite being aged, it wasn't heavy or off in the slightest, it was fresh. ![Tuna and tuna belly from the aged assorted sashimi](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-14-znm6v-966.webp) ![Yellowtail sashimi from the aged assorted platter](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-15-juukq-966.webp) ![Horse mackerel sashimi from the aged assorted platter](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-16-oczst-966.webp) ![Flounder sashimi from the aged assorted platter](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-17-1p01y-966.webp) ![Sea bream sashimi from the aged assorted platter](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-18-12mn8-966.webp) ![Salmon sashimi from the aged assorted platter](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-19-1xzg7-966.webp) Best of all, even though it's a per-person sashimi order, it comes out with a real variety. Tuna, tuna belly, yellowtail, horse mackerel, flounder, sea bream, and even salmon all showed up together on one plate, so even eating alone you get to enjoy several different flavors. Thanks to the aging, the umami was deep, so every single piece felt substantial. ![Full serving of Akita-style inaniwa cold udon](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-20-sjoat-966.webp) ## Akita inaniwa cold udon at 15,000 won: the noodles and the tempura > From the noodles to the tempura, the Akita inaniwa cold udon nails the details The Akita-style inaniwa cold udon we ordered alongside is the real inaniwa udon, considered one of Japan's three great udon styles. ![Inaniwa udon noodles with dipping tsuyu broth](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-21-wcbmp-966.webp) The noodles were great to start. Not the thick, plump udon strands you usually picture — these were thinner and firmer, with a real bite to them. ![Cold udon topped with grated radish, wasabi, and tenkasu](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-22-16bsj-966.webp) And the detail was well thought out: alongside grated radish and wasabi, they also gave us tenkasu (crispy tempura bits), and dropping those into the soy dipping broth (tsuyu) made it way more savory to enjoy. The two shrimp tempura pieces on top deserve their own shoutout. Instead of the usual thick, flour-heavy batter, this was fried in a thin, unevenly coated style, which let the shrimp's own flavor come through much more clearly. ![Two pieces of shrimp tempura served with the cold udon](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-23-1t53x-966.webp) ![Two pieces of futomaki served on the side](https://img.superchart.com/images/gatposo-gasan-inaniwa-cold-udon-lunch/gatposo-gasan-inaniwa-cold-udon-lunch-24-136k2-966.webp) The two pieces of maki (futomaki) served alongside at the end, with plump shrimp tempura and tangy-seasoned fillings, made for a satisfying way to finish the meal. ## Is Gapposo worth it for a Gasan Japanese lunch? One of the few restaurants in Gasan that's genuinely good for business meals. Hope they stay in business for a long, long time ♡ ## Where it is - Gapposo (갓포소) - 144 Gasan Digital 2-ro, Hyundai Terra Tower Gasan DK, 1F Unit 106, Geumcheon-gu, Seoul, South Korea - 서울특별시 금천구 가산디지털2로 144 현대테라타워가산DK 1층 106호 - 37.4812082, 126.8794474 - Google Maps: https://www.google.com/maps/search/%EA%B0%93%ED%8F%AC%EC%86%8C/@37.4812082,126.8794474,17z --- Superchart · https://superchart.com/en/@seoul-lunch-crossing/gatposo-gasan-inaniwa-cold-udon-lunch/ · https://superchart.com/llms.txt