# Tonkatsu with 1-hour free parking near Isu Station: Kosi Isu Branch - By Eunji L. (https://superchart.com/en/@nearby-dining-rooms/) - Written Sep 8, 2026 - Local places › Restaurants › Dongjak, Seoul - Sponsored: This post was written as a sponsored store visit. - English edition: https://superchart.com/en/@nearby-dining-rooms/koshi-isu-parking-moudum-katsu/ - Also in: [한국어](https://superchart.com/ko/@nearby-dining-rooms/koshi-isu-parking-moudum-katsu/index.md) ## In short Kosi Isu Branch is a udon and tonkatsu restaurant with 48-hour aged handmade noodles, on the first floor of the Isu Xi commercial building right by exit 9 of Isu Station, Dongjak, Seoul. Visiting by car and parking in the basement, the writer had handmade ten bukkake udon (with added tempura), mixed tonkatsu, and sweet potato cheese croquettes — the noodles were chewy with no flour smell, and the cutlets were thick-cut. If you're after a clean, not-too-salty meal near Isu Station, Kosi Isu Branch fits the bill. ## Good to know - **Location**: 119m from Isu Station Exit 9, 1st floor of Isu Xi commercial building - **Parking**: Free for 1 hour in the building's basement parking (B2–B3) - **Handmade Ten Bukkake Udon**: ₩11,000 (add tempura +₩4,000) - **Mixed Tonkatsu**: ₩14,500 - **Sweet Potato Cheese Croquette (2 pcs)**: ₩3,500 *as written by the visitor on Sep 8, 2026* ![Signature photo of udon and tonkatsu at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-01-8yq0t-1200.webp) I'm usually team "iced coffee no matter the season," and it's the same with udon — I rarely order the hot kind, but I really love cold udon when the noodles have that springy bite, and I go out for it pretty often. ![Exterior of Kosi Isu Branch near Isu Station](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-02-svyax-966.webp) This time I visited Kosi near Isu Station, a place said to make proper udon with 48-hour aged, handmade noodles! - 119m from Isu Station Exit 9 — super close to the station — plus 1 hour of free parking in the basement - Handmade cold udon noodles, made from dough aged 48 hours, with an exceptionally springy, chewy texture - Thick tonkatsu, fried moist and crispy, made with domestic chilled pork loin If you're looking for an Isu Station restaurant with all this going for it, I highly recommend Kosi! haha ## Location and parking at Kosi near Isu Station Kosi is on the 1st floor of the Isu Xi commercial building, a 1–2 minute walk from Exit 9 of Isu Station, so it's very accessible, and there's plenty of space in the building's basement parking with a free 1-hour allowance too. (Parking is on B2–B3.) We drove there, and the parking lot was spacious so there was zero parking stress — so convenient! And if you're taking the subway, it's right there as soon as you come out of Exit 9, which is honestly such a great location. ## What's the atmosphere like inside? ![Kosi Isu Branch interior packed with customers during dinner](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-03-1k7fw-966.webp) ![View of the table seating at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-04-1g3js-966.webp) ![Ivory and wood-tone atmosphere at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-05-1ysp5-966.webp) We came during dinner time and it was already packed with customers — must be a well-known spot. Luckily there were one or two seats left so we could sit down without waiting. ![A neatly set table at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-06-stvb9-966.webp) The inside has an ivory-and-wood-tone look that feels cozy and clean, perfect for a casual everyday meal or even a date spot. Even though the staff were busy, everyone was so friendly the whole time, which put me in a great mood! hahaha ## The menu board and what we ordered ![Udon menu board at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-07-9i0p5-966.webp) ![Tonkatsu menu board at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-08-ef9gd-966.webp) Kosi's signature menu near Isu Station is udon and tonkatsu. I was especially happy to see cold udon on the menu since that's my favorite! haha ![Table spread of ordered udon and mixed tonkatsu](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-09-1pdox-966.webp) We ordered two main dishes plus a side. - Handmade Ten Bukkake Udon ₩11,000 (+tempura ₩4,000) - Mixed Tonkatsu ₩14,500 - Sweet Potato Cheese Croquette (2 pcs) ₩3,500 ## How the handmade ten bukkake udon tastes ![A bowl of handmade ten bukkake udon](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-10-uj61t-966.webp) The handmade ten bukkake udon has noodles aged 48 hours that aren't hard at all but springy and chewy, and the house-simmered tsuyu soy sauce isn't too salty, so it paired well with the noodles. Apparently Kosi sticks to the traditional Japanese Sanuki method — kneading the dough from just three pure ingredients (salt, water, flour) and letting it age through two stages over 48 hours. Fun fact: the Japanese phrase "koshi ga aru" means "having a satisfying bite," and true to the name, the noodles really delivered on that! ![48-hour aged handmade udon noodles](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-11-eukbp-966.webp) ![Cold udon noodles lifted with chopsticks](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-12-vtfbz-966.webp) If you've been around for cold udon, you know some places have noodles that are too hard or taste raw-flour-ish, right? But Kosi's noodles had zero flour smell, were cooked evenly all the way through, and still had great springiness and chew! hahaha ![Close-up of bukkake udon with tsuyu sauce](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-13-1qj7r-966.webp) ![Not-too-salty tsuyu broth with udon](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-14-19l6v-966.webp) On top of that, the tsuyu broth, simmered with soy sauce brought in directly from Japan, wasn't salty and had deep umami that matched well with the thick noodles. ![Shrimp tempura placed on top of the udon](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-15-b5izc-966.webp) ![Udon topped with sweet pumpkin tempura](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-16-1g3su-966.webp) The added tempura — shrimp tempura and sweet pumpkin tempura placed on top of the udon — was crispy and delicious too, so we ended up with a more filling bowl! haha ## Mixed tonkatsu and sweet potato cheese croquettes ![A plate of mixed tonkatsu at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-17-18vro-966.webp) ![Cross-section of a thick pork loin cutlet](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-18-dwbgd-966.webp) The tonkatsu in the mixed platter is domestic chilled pork, seasoned first, then coated in milk and moist breadcrumbs and fried only after the order comes in, apparently! ![Close-up of a crispy fried tonkatsu](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-19-bnglc-966.webp) Maybe that's why there was zero off-smell, and it wasn't the kind of overly-crispy fried food that scrapes up the roof of your mouth — just the right amount of savory and crunchy. Above all, the cutlet meat was so thick that one bite filled my mouth with the savory taste of the pork loin — it was no joke! hahaha The king shrimp cutlet in the mixed platter was crispy too, with plump, tasty shrimp inside. ![King shrimp cutlet served with the mixed platter](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-20-8kgcj-966.webp) ![Sweet potato cheese croquette ordered as a side](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-21-nask0-966.webp) Since the batter itself is so thin and crispy, the sweet potato cheese croquette we ordered as a side (2 pcs, ₩3,500) was sweet, soft, and delicious. 😍 ## Overall verdict on Kosi Isu Branch ![Table set with udon and tonkatsu together](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-22-15orw-966.webp) The cold udon at Kosi near Isu Station has noodles that are chewy without being too hard, and the tsuyu seasoning isn't overly salty, so I could happily finish the whole bowl. ![A nearly finished udon bowl and tonkatsu plate](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-23-1mrtv-966.webp) ![A full spread of udon and tonkatsu at Kosi Isu Branch](https://img.superchart.com/images/koshi-isu-parking-moudum-katsu/koshi-isu-parking-moudum-katsu-24-1mxdg-966.webp) The tonkatsu and other fried items also had a great overall balance — the batter wasn't thick or greasy, and the meat was thick-cut too! haha If you're near Isu Station and want a clean, not-too-salty meal with handmade cold udon or thick tonkatsu, this place is a great stop. The basement parking is easy too, so if you're driving, I'd definitely recommend swinging by without worry! hahaha ## Where it is - Kosi Isu Branch (코시 이수점) - 300 Sadang-ro, 1st Floor Units 126 & 127, Dongjak-gu, Seoul, South Korea - 서울특별시 동작구 사당로 300 1층 126호, 127호 - 37.4844642, 126.9808303 - Google Maps: https://www.google.com/maps/search/%EC%BD%94%EC%8B%9C%20%EC%9D%B4%EC%88%98%EC%A0%90/@37.4844642,126.9808303,17z --- Superchart · https://superchart.com/en/@nearby-dining-rooms/koshi-isu-parking-moudum-katsu/ · https://superchart.com/llms.txt