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.

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!

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.


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!

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.


The table seating looks like this.

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.

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






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.

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

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.


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!!

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).

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.


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 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.

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






