# Gwanak udon restaurant, lunch for two with jumbo shrimp tempura: Kosi

- By Yerin Sang (https://superchart.com/en/@euljiro-side-doorway/)
- Written Sep 16, 2026
- Local places › Restaurants › Gwanak, Seoul
- Sponsored: This visit and meal were provided by the restaurant.
- English edition: https://superchart.com/en/@euljiro-side-doorway/kosi-seoul-national-university-bukkake-udon/
- Also in: [한국어](https://superchart.com/ko/@euljiro-side-doorway/kosi-seoul-national-university-bukkake-udon/index.md)

## In short

Kosi Seoul National University Entrance Branch is a Japanese udon restaurant in Gwanak, Seoul, near Seoul National University Station, and its bukkake udon was featured on SBS's "Master of Noodles." Arriving just after the weekend lunch rush, the restaurant was still nearly full, and the order for two was tori tempura bukkake udon, half-and-half katsu and a side of shrimp tempura. The chewy, rice-cake-like udon noodles and the enormous fried shrimp were the highlights of the meal.

## Good to know

- **Hours**: 11:00 - 20:50
- **Break time**: 15:00 - 17:00
- **Parking**: Nearby public parking lot
- **Address**: Unit 101, 466 Bongcheon-ro, Gwanak-gu, Seoul
- **Ordered**: Tori tempura bukkake udon, half-and-half katsu, side of shrimp tempura
- **Included with the meal**: Pickled radish, kkakdugi (radish kimchi) and salad; soup with the katsu, one inari sushi with the udon
- **Seating**: Tables plus bar (counter) seats

*as written by the visitor on Sep 16, 2026*

Today I'm sharing a review from a visit with my partner to Kosi, which recently opened near Seoul National University Entrance Station and serves the bukkake udon (cold udon topped with broth) featured on SBS's 'Master of Noodles.' This is the newly opened Seoul National University Entrance Station restaurant, 'Kosi Seoul National University Entrance Branch.'

![Kosi Seoul National University Entrance Branch main photo](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-01-nxxvn-1200.webp)

Honestly, neither of us had ever tried bukkake udon before, so we went in with high expectations — and both the udon and the tonkatsu (breaded pork cutlet) turned out to be delicious. It's a great pick not just for people looking for restaurants near Seoul National University Entrance Station, but also for those exploring nearby Sharosu-gil.

## Kosi in Gwanak: hours, location and how to get there

- 📌 Seoul National University Entrance Station restaurant 'Kosi Seoul National University Entrance Branch'
- ⏰️ Hours: 11:00 - 20:50 (Break time: 15:00 - 17:00)
- 🚗 Parking: Use nearby public parking lot
- 📍 Address: 466 Bongcheon-ro, 101ho, Gwanak-gu, Seoul, South Korea

![Exterior of Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-02-qfijs-900.webp)

Kosi Seoul National University Entrance Branch is close to Seoul National University Entrance Station, so it's easy to reach by public transit. It's also close to Sharosu-gil, so it's a good spot to pair with exploring that area.

![Entrance to Kosi near Seoul National University Entrance Station](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-03-p3007-900.webp)

## How busy is Kosi at weekend lunch?

When we arrived at Kosi Seoul National University Entrance Branch, the space was bigger than I expected. True to a newly opened spot, it's clean, and the white-and-wood interior blends together nicely, giving it the feel of an actual restaurant in Japan.

We visited a bit after the lunch rush even though it was a weekend, and there were still so many customers that the place was nearly full. Even though it just opened recently, it already seems to be getting word-of-mouth as a go-to restaurant near Seoul National University Entrance Station.

![White-and-wood-toned interior of Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-04-10adb-900.webp)

Maybe because it's newly opened, the whole place feels clean and orderly, and beyond the regular table seats there are also bar-style counter seats, which makes it look like a good option for solo diners too.

It really doesn't feel awkward to eat here alone, and in fact there were quite a few solo diners the day we visited. Whether you're on a date, out with friends, or looking for a solo-dining-friendly restaurant near Seoul National University Entrance Station, this place should satisfy.

![Table and bar seats at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-05-x6g5u-900.webp)

![View of the dining hall seating at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-06-1bq4u-900.webp)

![Bar-style counter seating at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-07-1yod7-900.webp)

![Interior decor at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-08-1829b-900.webp)

![View of the seating area at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-09-i9q5m-900.webp)

## What's on the menu at Kosi: bukkake udon, tonkatsu and mazesoba

If I had to pick Kosi's signature menu, it has to be the udon — after all, it was featured as 'Master of Noodles' on the show. There's a whole range of udon on offer, from the signature bukkake udon to warm udon.

There are also several types of tonkatsu, plus mazesoba (mixed noodles), zaru soba (cold buckwheat noodles), donburi (rice bowl), and quite a wide range of other menu options.

![Udon and tonkatsu menu board at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-10-1gglf-900.webp)

![Menu listing bukkake udon and mazesoba](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-11-7117g-900.webp)

We ordered the half-and-half katsu (half tonkatsu, half cheese katsu), the tori tempura bukkake udon topped with fried chicken thigh, and added a side of shrimp tempura! For reference, the bukkake udon can also be upgraded to a full set that includes tonkatsu, so if you want udon and katsu together, that option looks good too.

The kiosk at each table plays the SBS 'Master of Noodles' segment, so you can see exactly how these udon noodles are made — nice to have on while eating.

!['Master of Noodles' video playing on the table kiosk](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-12-ku7pl-900.webp)

![Table kiosk screen at Kosi](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-13-et6ti-900.webp)

![Table set up at Kosi after ordering](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-14-10f5q-900.webp)

## Tori tempura bukkake udon: noodles as chewy as rice cake

Kosi Seoul National University Entrance Branch's bukkake udon comes with the noodles and toppings served separately; you pour the accompanying tsuyu (dipping sauce) over the udon and mix it well before eating. True to Japanese home-style dining, every dish arrives neatly plated on a single tray along with side dishes. Pickled radish, kkakdugi, and salad come standard, and the katsu comes with soup while the udon comes with one inari sushi piece.

Since it was our first time trying bukkake udon, we had high expectations — and right off the bat, the noodles themselves were genuinely impressive!

They're much thicker than the udon noodles I've had before, but it's not just about thickness — the texture itself is completely different.

They're incredibly chewy with a real bite to them, to the point where it felt less like eating udon noodles and more like eating chewy rice cake. It made total sense why this was featured as 'Master of Noodles.'

The fried chicken thigh topping — I expected it to be your basic karaage — but it was crispy outside, juicy inside, and seasoned just right, pairing nicely with the udon.

![Full spread of tori tempura bukkake udon topped with fried chicken thigh](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-15-179do-900.webp)

![Bukkake udon noodles mixed with tsuyu sauce](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-16-tacyg-900.webp)

## Half-and-half katsu and the jumbo shrimp tempura side

The half-and-half katsu comes as half tonkatsu, half cheese katsu, and the breading was extremely crispy — great texture.

The cheese katsu in particular was one of the standout items — the cheese was savory and soft, really satisfying.

![Half-and-half katsu with tonkatsu and cheese katsu](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-17-xj4x8-900.webp)

![Cross-section of crispy-battered cheese katsu](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-18-1fq0v-900.webp)

And personally, out of the side dishes, I really want to recommend the shrimp tempura! The size alone is pretty overwhelming — big, plump shrimp with crispy batter that came together perfectly, satisfying in both texture and taste.

![Large shrimp tempura ordered as a side dish](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-19-17pdx-900.webp)

![Size comparison of Kosi's shrimp tempura](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-20-16ixx-900.webp)

![Full meal spread at Kosi including shrimp tempura](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-21-1xr9d-900.webp)

## Is Kosi in Gwanak worth it, and who is it for?

I visited this Seoul National University Entrance Station restaurant curious about the 'Master of Noodles' bukkake udon, but the quality of the tonkatsu and shrimp tempura exceeded expectations too, making me curious about the rest of the menu.

If you want to experience udon done properly — unlike anything you've had before — I'd recommend Kosi Seoul National University Entrance Branch, this Seoul National University Entrance Station restaurant. It's easy to access from the station and convenient to visit from Sharosu-gil too, making it a solid choice for a meal.

![Final table spread at the end of the meal at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-22-1agrw-900.webp)

![Udon tray served with side dishes and inari sushi](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-23-19o36-900.webp)

![Last look at the table at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/kosi-seoul-national-university-bukkake-udon/kosi-seoul-national-university-bukkake-udon-24-e3wgt-900.webp)

Above all, it's a place that makes it clear why it was featured as 'Master of Noodles' on the show — so if you're looking for restaurants near Seoul National University Entrance Station, in Bongcheon-dong, or on Sharosu-gil, I really recommend giving it a try! It's especially great for udon lovers who want to properly enjoy exceptional noodles.

## Where it is

- Kosi Seoul National University Entrance Branch (코시 서울대입구점)
- 466 Bongcheon-ro, 101ho, Gwanak-gu, Seoul, South Korea
- 서울특별시 관악구 봉천로 466 101호
- 37.4820226, 126.951605
- Google Maps: https://www.google.com/maps/search/%EC%BD%94%EC%8B%9C%20%EC%84%9C%EC%9A%B8%EB%8C%80%EC%9E%85%EA%B5%AC%EC%A0%90/@37.4820226,126.951605,17z

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