Sanuki udon in Gwanak, Seoul: tempura bukkake at Kosi

In short

Kosi Seoul National University Entrance Branch is a Japanese restaurant in Gwanak, Seoul, serving Sanuki udon and handmade pork cutlets. We ordered tempura bukkake udon, maze udon, and cheese katsu for 34,500 won. Verdict: springy noodles, crisp tempura, and plenty of stretchy cheese made for a satisfying dinner.

Cheese katsu topped generously with cheese

Good to know

Address
Suite 101, 466 Bongcheon-ro, Gwanak-gu, Seoul, South Korea (서울 관악구 봉천로 466 101호)
Hours
Daily 11:00–20:50
Break time
15:00–17:00
Parking
No parking. On weekends and public holidays, one hour of building parking may be possible if spaces are empty and the sign is moved aside.
Ordered
Cheese katsu ₩12,500 / Maze udon ₩11,000 / Tempura bukkake udon ₩11,000
Total
₩34,500
Review event
A photo review earns a sweet-potato croquette or soft drink.

as written by the visitor on Sep 10, 2026

I’d visited the Seongsu branch before, so I was so happy to hear one had opened near Seoul National University Entrance that I went right away!

Exterior view before visiting Kosi Seoul National University Entrance Branch

Kosi Seoul National University Entrance Branch: location and parking

The address is Suite 101, 466 Bongcheon-ro, Gwanak-gu, Seoul, South Korea. It is open daily from 11:00 to 20:50, with a break from 15:00 to 17:00.

There is no parking, but the notice said that on weekends and public holidays, when the building parking is empty and there is a sign, you can move the sign to the side and park for one hour. It also said there are often empty spaces along the main road beside the building.

Kosi Seoul National University Entrance Branch building and parking information
Kosi restaurant exterior near Seoul National University Entrance

The sign on the main road says “Sanuki udon & handmade pork cutlet,” so it was easy to spot even from far away.

Solo-friendly bar seats and the dining room

The standing sign by the entrance makes what they sell clear at a glance! There is a menu there too, so do have a look!

Menu standing sign in front of the Kosi entrance

Inside, the space was neither huge nor tiny, but there was a long row of one-person bar seats by the window, so it felt easy to come for a solo meal!! I’m planning to come back alone after studying at a nearby café sometime.

Window-side bar seats for solo diners
Interior seating at Kosi Seoul National University Entrance Branch

The table seating looks like this.

Table seating layout at Kosi

From the time I went in until I left, about 70% of the seats stayed occupied. It must be one of the popular spots around Seoul National University Entrance Station, haha.

Round logo light on the restaurant wall

The round logo light on the wall caught my eye first. There are self-serve aprons too! Udon and katsu can splash onto your clothes more than you’d think, so this was nice.. haha

The cutlery is in the table drawer. Each table also has seasonings such as salad dressing, pepper, and sesame seeds.

A menu from cold udon to pork cutlets

Udon menu at Kosi Seoul National University Entrance Branch
Pork cutlet menu at Kosi Seoul National University Entrance Branch
Rice bowl menu at Kosi Seoul National University Entrance Branch
Side menu at Kosi Seoul National University Entrance Branch
Alcohol menu at Kosi Seoul National University Entrance Branch
Menu board at Kosi Seoul National University Entrance Branch

The udon is broadly divided into cold and hot udon. There is kama udon and maze udon too, and lots of pork-cutlet options. They also have rice bowls, sides, and alcohol, so it seemed like a decent place for a drink with your meal too, haha.

Table tablet ordering and review event

You order on the tablet at each table, and they also have a Naver receipt-review event! If you leave a photo review, you can get a sweet-potato croquette or a soft drink, so keep that in mind!!

This is what we ordered, haha.

  • Cheese katsu ₩12,500
  • Maze udon ₩11,000
  • Tempura bukkake udon ₩11,000
  • Total ₩34,500
A full table with cheese katsu and three udon dishes

With three dishes, the table was completely full, haha.

Tempura bukkake udon mixed with tsuyu

The tempura bukkake udon comes out like this! Add green onion, grated daikon, and tempura crumbs to taste. I added all of the green onion and grated daikon.

This is udon mixed with rich tsuyu (Japanese noodle sauce). Squeeze over the lemon juice, pour the tsuyu over the noodles, and mix it well. I normally love thick udon noodles, and these were seriously chewy and bouncy! Maybe because it is Sanuki udon, it really had a satisfying bite.

Tempura bukkake udon with tsuyu
Chewy noodles in tempura bukkake udon

The tempura toppings are kabocha squash and shrimp. There is one shrimp tempura too, and its batter was crisp. Dip it only lightly in the tsuyu and try it before it gets soggy!!

Kabocha squash and shrimp tempura toppings

Maze udon finished with egg yolk and rice

The maze udon comes in one bowl with egg yolk, minced meat, green onion, tempura crumbs, and gim (roasted seaweed).

Maze udon topped with egg yolk

It is a soupless mixed udon, so the key is to break the yolk and give it a good mix. After eating some, try adding the kelp vinegar too.

Maze udon with kelp vinegar
Rice mixed into the leftover sauce

The best part comes after you finish the maze udon: add the bowl of rice that comes with it to the leftover sauce and mix it like this, and the ending is perfect, haha~~

Cheese katsu topped generously with cheese

Cheese katsu with plenty of cheese

The cheese katsu comes with cheese generously covering the pork cutlet. There was more cheese than I expected! It also comes with rice, cabbage, kkakdugi (cubed radish kimchi), danmuji (pickled yellow radish), and soup.

The cheese stretched so well and was wonderfully gooey!! I lifted it for a photo, but it just would not break, haha.

I had only tried the cold udon, but I noticed lots of people at the next table having hot udon too. The broth looked clean and clear, so I’m planning to try hot udon next time!!! Quite a few people were ordering set meals as well; people who ordered udon added pork cutlet as a side, while people who ordered rice bowls paired them with mini udon.

Tissues and hair ties at the restaurant exit

On the way out, there are tissues, toothpicks, and hair ties. They are there for anyone who needs them, haha. The noodles, tempura, and katsu were all good.

Where it is

Kosi Seoul National University Entrance Branch (코시 서울대입구점)코시 서울대입구점

Suite 101, 466 Bongcheon-ro, Gwanak-gu, Seoul, South Korea (서울 관악구 봉천로 466 101호)서울특별시 관악구 봉천로 466 101호

Open in Google Maps

Local places · Restaurants