Japanese restaurant near Isu Station for cold udon: Kosi Isu Branch

My favorite solo-dining spot around Sadang and Isu: Kosi, an Isu Station favorite. It is such a good restaurant for eating alone at lunch or dinner near Isu Station that I have already visited at least 10 times for solo meals.

If you are looking for a great-value Isu Station spot specializing in tonkatsu and cold udon that tastes great too, I recommend it. Let me start my review of the solo-dining menu picks I ordered at Kosi near Isu Station!

Where is Kosi Isu Branch near Isu Station?

Kosi is an Isu Station favorite in an unbelievably convenient location, just a one-minute walk from the station. It is directly above Exit 9, and parking at the Isu Xi Complex Shopping Mall comes with one hour of free parking.

It specializes in tonkatsu and udon near Isu Station, making its noodles in-house, so the noodles are especially incredible. It is also a place that does tonkatsu really, really well.

The dinner rush and solo-dining seats

This Isu Station lunch and dinner spot always has a wait during peak hours. When I visited around dinnertime, every seat but one was taken.

There are counter seats that make solo dining near Isu Station easy and comfortable. You can eat while looking out the window.

Tori Ten Bukkake Udon with extra tonkatsu

Tori Ten Bukkake Udon (cold udon topped with chicken tempura) + extra tonkatsu. After visiting Kosi near Isu Station more than 10 times, this is my absolute favorite combination. Kosi's best-selling Tori Ten Bukkake Udon comes with tonkatsu, and I strongly recommend this set because cold udon and fried dishes go so well together.

Kosi is great for solo dining near Isu Station because even alone, you can have a filling meal. Even with a whole tableful like this, it costs only ₩16,000—such amazingly generous value. When you order an udon menu item at Kosi, yubu sushi (seasoned fried-tofu rice pockets) comes free, so it helps fill the rice part of your stomach too.

I have tried all three—cold udon, hot udon, and kama udon—but personally, cold udon is my favorite. The springy, chewy texture of the noodles comes through even more.

Basic cold udon is only ₩9,000, making this Isu Station favorite overflowing with value.

It is an udon place, but the tonkatsu is the real deal too

I strongly recommend adding tonkatsu. It is among the best tonkatsu I have had near Isu Station. People seem to order lots of udon because they think Kosi is an udon specialist, but the tonkatsu here is the real deal too. The slightly pink meat inside is so tender and delicious.

That is why I also strongly recommend Kosi as a tonkatsu spot near Isu Station.

They also sell standalone tonkatsu dishes, making it a good place for solo dining near Isu Station. For another menu item, I ordered the cheese tonkatsu: four plump pieces packed with cheese, rich and delicious. Kosi really nails fried food, which is why I always ordered karaage with my cold udon too. The cheese tonkatsu at Kosi was fried to just the right degree as well. The coating was neither too thin nor too thick—just right.

The sweet potato cheese croquette I ordered as a side was also so good. It was packed to bursting with sweet potato, so this sweet-potato lover was happy! It was not cheap-tasting cheese sweet potato at all; it was genuinely delicious, with a wonderful, savory sweet potato-and-cheese combination.

From solo meals to family dining

For anyone looking for a great solo-dining spot near Isu Station, or a tasty Isu Station restaurant for tonkatsu and udon, I recommend Kosi! Kosi Isu Branch specializes in cold udon and tonkatsu and is so close to Isu Station that it is easy to visit anytime. Whatever you order, it is hard to go wrong, and its solo-friendly portions and great value have kept me coming back again and again. If you are looking for a good restaurant around Sadang-dong near Isu Station, I strongly recommend Kosi Isu Branch. With free parking, it is also a great place to visit with family. The staff are always kind whenever I go, making for a pleasant meal :)