Gwanak Japanese restaurant Friday dinner: cold udon at Kosi

In short

Kosi Seoul National University Entrance Branch (코시 서울대입구점) is a Japanese restaurant in Gwanak, Seoul, serving cold udon and pork cutlets. Even on a Friday evening, takeout and dine-in customers kept coming, while counter seats, mini-menu pairings, and table ordering made the meal especially easy. Kosi is a satisfying choice when you want springy cold udon with cheese cutlet.

Representative photo of Kosi Seoul National University Entrance Branch

Good to know

Hours
Daily 11:00–20:50; break time 15:00–17:00
Parking
No weekday parking. On weekends and public holidays, one hour of building parking may be available when spaces and a sign are present.
Seating
Street-facing window counter seats
Tempura bukkake udon
₩11,000
Half-and-half katsu
₩13,500
Half-and-half katsu includes
2 pieces of cheese katsu and 6 pieces of pork loin katsu

as written by the visitor on Sep 12, 2026

Representative photo of Kosi Seoul National University Entrance Branch

When you’re craving cold udon near Seoul National University Entrance Station

It is open daily from 11:00 to 20:50, with a break time from 15:00 to 17:00. The indoor restrooms are separated by gender, and parking is not available on weekdays. According to the restaurant notice, on weekends and public holidays, if the building parking is empty and a sign is out, you can move the sign aside and park for one hour; there also seem to often be empty spaces along the main road beside the building.

There wasn’t a good cold-udon spot near Seoul National University Entrance, so I used to go all the way to Seongsu… 🥹

Cold udon restaurant near Seoul National University Entrance Station
Photo related to the Kosi restaurant on Syarosu-gil

I pass Exit 5 of Seoul National University Entrance Station every day, and I thought, “Has an impressive new restaurant opened on Syarosu-gil?!” Turns out it was a great cold-udon place 🏃♀️🏃♀️ I ran straight over!!

Exterior of Kosi near Seoul National University Entrance Station

Friday evening counter seats that are easy for solo diners

It was 7 p.m. on a Friday evening, and takeout and dine-in customers kept coming ‼️ All the street-facing window seats are counter seats, so they are set up nicely for people dining alone without feeling awkward. Here are the cold-udon options!

Kosi cold udon menu information
Kosi cold udon menu board

And here are the pork cutlet options! The nice thing is that the set combinations are so well planned: you can add a mini pork cutlet to cold udon, or mini udon to a pork-cutlet dish, so you can try several things!! 👉 When sharing feels a little awkward, or you came alone but want to eat everything… you know this matters, right?! ‼️⚠️

Cold udon and pork cutlet set combination information

There were two of us, so we sat at the counter, where the big windows gave us such a pleasant view outside ✅ There were quite a few solo diners too! With the counter seats, table ordering, and mini-menu combinations, it looked genuinely great for eating alone. Next time I need to come by myself and try cold udon with a mini pork cutlet 🤤

Counter seats and floor-to-ceiling window seating

You can order and pay at the table all at once!!! Perfect for shy people 👏

Table ordering and payment information

Since there were two of us, we ordered two individual dishes—and they have Kirin beer here? Ordered immediately 🍻🍻🍻

Ordering Kirin beer

Right in front of us were salad dressing, sesame seeds, utensils, wet wipes, napkins, and even paper cups! Personally, at pork-cutlet places like this, it is oddly annoying to call a staff member every time I need more sauce or sesame seeds. Everything I needed was right there, which was so convenient!! I hate having my meal interrupted, so I tend to give lots of points for little details like this..⭐️ ✅ (This is important too.)

Pork cutlet utensils and sauces provided

Ordering tempura bukkake udon and half-and-half katsu

🍜🍤 Tempura bukkake udon (cold udon with tempura) ₩11,000 It comes with inari sushi, assorted toppings (daikon radish, scallions, tempura flakes), and salad.

Tempura bukkake udon components

🥩 Half-and-half katsu (Japanese breaded cutlet) ₩13,500 It includes 2 pieces of cheese katsu and 6 pieces of pork loin katsu!

Half-and-half katsu menu components
Cheese katsu and pork loin katsu combination
Half-and-half katsu meal set

Broth on the side, tempura texture your way

The udon comes with the broth on the side!! That means you can choose whether to let the tempura get soft or keep it crispy, haha. But that tempura was seriously delicious ‼️✅ The noodles were bouncy and chewy. Yes, this is it.. haha

Tempura bukkake udon served with broth separately
Springy cold udon noodles and tempura

How the pork loin and cheese katsu tasted

Since the half-and-half katsu includes pork loin, the regular katsu did feel a little dry. But you can moisten it with the cold udon. The cheese katsu was packed with mozzarella and very tasty ❤️ At first I dipped it heavily in sauce, then halfway through I tried just a little salt. Personally, I liked the salt better because the meat flavor came through more clearly. The rice and clear soup served alongside also went together nicely, making it a filling meal.

Above all, there are so many menu choices that I don’t think it would be hard to pick something no matter who you come with! I think of it for days when I’m craving pork cutlet but want to have a bit of this and that too, hahaha 🍽️ Next time I definitely need to try the cold udon too.. I’ve already picked my next order ✅ The staff were so kind, and the restaurant was very clean, so I had a really pleasant meal!

Where it is

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

Unit 101, 466 Bongcheon-ro, Gwanak-gu, Seoul, South Korea서울특별시 관악구 봉천로 466 101호

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