# Katsu set meals with the best udon broth in Gwanak, Seoul: Kosi - By Yudam (https://superchart.com/en/@filter-paper-hour/) - Written Sep 13, 2026 - Local places › Restaurants › Gwanak, Seoul - Sponsored: This visit was sponsored by the business. - English edition: https://superchart.com/en/@filter-paper-hour/koshi-seoul-univ-udon-broth-katsudon/ - Also in: [한국어](https://superchart.com/ko/@filter-paper-hour/koshi-seoul-univ-udon-broth-katsudon/index.md) ## In short Kosi Seoul National University Entrance Branch is a Sanuki udon and pork katsu restaurant one minute from Exit 5 of Seoul National University Entrance Station in Gwanak, Seoul. The fresh pork loin katsu set (15,000 won) and the katsudon set (14,500 won) both come with udon, and the clear, deeply savory udon broth was the most memorable part of the meal. With udon starting at 9,000 won, Kosi became this writer's favorite restaurant of the year. ## Good to know - **Location**: 1 minute from Exit 5 of Seoul National University Entrance Station; turn at the Starbucks and it's on the left - **Hours**: Daily 11:00–20:50 - **Break time**: 2 hours from 15:00 - **Parking**: None; public lots are far, so public transit is recommended - **Signature menu**: Tori ten bukkake udon 11,000 won, fresh pork loin half-and-half katsu 13,500 won, shrimp tempura udon 11,000 won - **Recommended menu**: Sanuki noodle bukkake udon 9,000 won, Sanuki noodle mazesoba-style udon 11,000 won, handmade katsudon 11,000 won - **What was ordered**: Fresh pork loin katsu set 15,000 won, katsudon set 14,500 won - **Seating**: Solo dining seats along one side - **Price reference**: ₩11,000 ≈ $8.2 · ₩9,000 ≈ $6.7 (2026-09-15) *as written by the visitor on Sep 13, 2026* This is Kosi, the writer's #1 restaurant of the year. Apparently it's the place featured on SBS's Master's Master (생활의 달인) for its udon craftsman. The katsu is insane too, but the udon broth is an absolute knockout. And it's all affordable. ![Signature photo of Kosi Seoul National University Entrance Branch's udon and pork katsu](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-01-1eb22-1200.webp) ![Close-up of Sanuki udon at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-02-1p246-900.webp) ![The pork katsu set spread at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-03-1jnfb-900.webp) ## Where is Kosi Seoul National University Entrance Branch, and what are its hours? Kosi Seoul National University Entrance Branch is at Bongcheon-dong 870-1, Gwanak-gu, Seoul — just a minute from Exit 5 of Seoul National University Entrance Station. Turn past the Starbucks and it's on your left. Open daily 11:00–20:50, with a two-hour break starting at 3pm. Last orders run until 8:50pm. No parking on site, and the public parking lots are quite far too. I'd recommend taking public transit. ## Outside, inside, and how long is the wait at Kosi? ![Kosi's exterior entrance near Exit 5 of Seoul National University Entrance Station](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-04-qwqsf-900.webp) Come out of Exit 5 of Seoul National University Entrance Station and turn right — the entrance is on your left. Don't get confused finding it. ![Kosi Seoul National University Entrance Branch's entrance and waitlist area](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-05-5ft61-900.webp) ![Signage outside Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-06-9a12c-900.webp) Even though I visited fairly late, there was already a line waiting. Turnover is fast so I got in quickly, but ✅ make sure to write your name on the waitlist as soon as you arrive! ![Interior of Kosi taken after finishing the last seating meal](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-07-1b6bs-900.webp) This shot is from the last seating, taken after I finished eating and stepped out. The interior is clean with no clutter. ![Bar seating for solo diners at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-08-n1oqc-900.webp) There are bar seats on one side, great for eating alone without feeling self-conscious. It's a solid solo-dining spot near Seoul National University Entrance too. ![Fully packed dining hall at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-09-pe3hz-900.webp) While I was eating, the place was completely packed. Kosi is genuinely, seriously popular. ![Tidy interior decor details at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-10-swfyd-900.webp) The tidy, cute interior touches catch your eye. ## Kosi menu and prices: udon, katsu and set meals ![Udon menu board at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-11-1q9mj-900.webp) ![Signage listing Kosi's signature menu items](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-12-k9tfu-900.webp) ![Pork katsu menu price list at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-13-1kmkx-900.webp) ![Katsudon menu page at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-14-981cb-900.webp) ![Side menu listing at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-15-fpl0s-900.webp) ![Description of the set-meal options at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-16-vzle4-900.webp) ![Full view of the menu board at Kosi Seoul National University Entrance Branch](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-17-1g1rb-900.webp) - Signature · Tori tempura bukkake udon ₩11,000 - Signature · Half pork loin katsu ₩13,500 - Signature · Shrimp tempura udon ₩11,000 - Recommended · Sanuki noodle bukkake udon ₩9,000 - Recommended · Sanuki noodle mazesoba-style udon ₩11,000 - Recommended · Handmade katsudon ₩11,000 The signature menu at Kosi Seoul National University Entrance Branch is, without question, the Sanuki-style udon noodles — special noodles made by that Master's Master craftsman. The tori tempura bukkake udon, topped with chicken thigh and mixed together, is the star, and the shrimp tempura udon is also a signature dish. The prices are really great too. A huge fried shrimp on top for just ₩11,000? There's a wide range including katsu and katsudon sides as well. Udon starts at ₩9,000, and ✅ pretty much every hearty, filling menu item is just ₩11,000! This is the best-value, best-tasting place I've found this year. ## Eating the fresh pork loin katsu set and the katsudon set - Pork loin katsu set ₩15,000 - Katsudon set ₩14,500 ![Kosi's pork loin katsu set with a large serving of udon](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-18-1qphc-900.webp) The katsu set really comes with a huge portion. It includes both katsu and udon. The udon was a big serving too. The pork katsu wasn't greasy at all, had no gamey smell, and had a wonderfully savory meat flavor and texture. ![Cross-section of Kosi's thickly fried pork loin katsu](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-19-1c78d-900.webp) The portion was really generous too. I found myself wondering — is it even possible to get this flavor at this price in this day and age? I thought, 'is Kosi something the whole world already knows about, and I'm the only one just finding out now?' haha. ![Kosi's katsudon set served with added udon](https://img.superchart.com/images/koshi-seoul-univ-udon-broth-katsudon/koshi-seoul-univ-udon-broth-katsudon-20-mqmgb-900.webp) I ordered the katsudon set — if you switch any menu item to a set, you can add udon. Eating the katsudon, I was truly shocked again. This too was insanely good. The seasoning was just right — savory and pleasantly salty. I'd highly, highly recommend Kosi's katsudon. ## Why the udon broth is the real star at Kosi But the real main character of Kosi? ✅ It's the udon 💕 The broth, first of all, is out of this world. It was a cool, deep, savory broth unlike anything I'd ever had before in my life. Eaten with the craftsman's udon noodles, it's the best. This was the most moving broth dish of the year, according to me. It's only September, but so far Kosi is my #1 spot this year! Of course, the top 5 fight is insanely close. ✅ My recommended combo is udon + katsudon, haha. Though honestly everything here is delicious! ## Is Kosi in Gwanak worth a visit? Final verdict - Moving broth flavor — the #1 restaurant near Seoul National University Entrance - Udon featured on SBS's Master's Master - Unbelievably cheap prices for this level of taste I didn't know broth like this could even exist. Granted, I really love broth-based dishes in general. So I'm giving Kosi my #1 pick of the year for its deep, deep broth flavor. Sadly, I think I'll now compare every other udon shop to Kosi and find them lacking, haha. I wonder if any udon shop will ever beat Kosi. It's that good, and the prices are also shockingly cheap. It's clearly a famous place — am I really the only one just discovering it now, haha? Where else these days can you eat this full for ₩11,000, haha. Kosi is a chain with several locations in Seoul, so I've saved them all and plan to go whenever I'm hungry, haha. The prices are unbeatable too. ## Where it is - Kosi Seoul National University Entrance Branch (코시 서울대입구점) - 466 Bongcheon-ro, 101ho, Gwanak-gu, Seoul, South Korea - 서울특별시 관악구 봉천로 466 101호 - 37.4820226, 126.951605 - Google Maps: https://www.google.com/maps/search/%EC%BD%94%EC%8B%9C%20%EC%84%9C%EC%9A%B8%EB%8C%80%EC%9E%85%EA%B5%AC%EC%A0%90/@37.4820226,126.951605,17z --- Superchart · https://superchart.com/en/@filter-paper-hour/koshi-seoul-univ-udon-broth-katsudon/ · https://superchart.com/llms.txt