# Seongsu gyukatsu restaurant with free salad refills: Gyuen Dang

- By Miyeon Choi (https://superchart.com/en/@jangsu-corner-tray/)
- Written Sep 19, 2026
- Local places › Restaurants › Seongdong, Seoul
- Sponsored: This visit was sponsored by the business.
- English edition: https://superchart.com/en/@jangsu-corner-tray/seongsu-gyukatsu-anshin-doneness-refill/
- Also in: [한국어](https://superchart.com/ko/@jangsu-corner-tray/seongsu-gyukatsu-anshin-doneness-refill/index.md)

## In short

Gyuen Dang Seongsu Main Branch is a gyukatsu (Japanese fried beef cutlet) restaurant on the second floor at 10 Yeonmujang 7-ga-gil in Seongdong-gu, Seoul. Two friends ordered two tenderloin gyukatsu at 24,000 won each, grilled the slices themselves on a tabletop brazier until the outside was crisp and the inside still juicy, and added Isigny butter, a sweet-tangy house sauce and free salad and wasabi refills. For lunch near Seongsu Station, Gyuen Dang is worth a Naver reservation before you go.

## Good to know

- **Menu**: Tenderloin gyukatsu, 24,000 won
- **Location**: 2nd floor, 10 Yeonmujang 7-ga-gil, Seongdong-gu, Seoul (taco chain Got It on the 1st floor, salt bread bakery Betong next door)
- **Reservations**: There is usually a wait; a Naver reservation gets you seated right away
- **Review event**: Leave a Naver or Google review and get a mini okonomiyaki
- **Refills**: Salad and wasabi refills available
- **Price reference**: ₩24,000 ≈ $17.5 (2026-09-20)

*as written by the visitor on Sep 19, 2026*

I went to Seongsu, which is hot right now, partly to use the Olive Young Members Lounge too. (Sad story: the lounge had a 3-hour wait, so we never made it in.) Today's lunch was gyukatsu — at Gyuen Dang Seongsu Main Branch.

![The building housing Gyuen Dang Seongsu Main Branch, seen from a Seongsu street](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-01-1bsam-900.webp)

![The Seongsu alley near the entrance of Gyuen Dang Seongsu Main Branch](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-02-1xf34-900.webp)

## Where is Gyuen Dang Seongsu Main Branch? Up on the second floor

Gyuen Dang Seongsu Main Branch is on the 2nd floor of the building at 10 Yeonmujang 7-gagil. Right next door is Betong, a salt bread spot everyone loves, and the 1st floor has a taco chain called GotIt — go up to the 2nd floor and there's Gyuen Dang.

![The taco shop on the 1st floor and signage for the 2nd floor at Gyuen Dang's building](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-03-1gb7f-900.webp)

![A line of customers waiting outside the salt bread bakery next to Gyuen Dang](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-04-180uq-900.webp)

Is that salt bread really that good...? The line is seriously long.

![Seating inside the 2nd-floor dining room of Gyuen Dang Seongsu Main Branch](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-05-148u0-900.webp)

## Waiting and seating at Gyuen Dang: is a reservation a must?

There was a wait when we visited, but thanks to booking ahead on Naver, we got seated right away. Inside, there are seats tucked into every corner. Even spots that look like they couldn't possibly fit a table — turns out there's a table there. Great use of space. If you're going, I'd recommend booking ahead on Naver.

![The dining hall at Gyuen Dang Seongsu Main Branch with tables tucked into every corner](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-06-1kigw-900.webp)

![A table at Gyuen Dang with the review event notice displayed](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-07-1e0cw-900.webp)

## Tenderloin gyukatsu for 24,000 won, plus a mini okonomiyaki review event

We ordered two tenderloin gyukatsu (₩24,000 each). Apparently if you take part in the Naver or Google review event, they give you a mini okonomiyaki?! I took a photo of the sign but didn't read it closely, so I only found this out just now writing this... Everyone else, write your review and enjoy some tasty okonomiyaki with a beer.

![The tenderloin gyukatsu listed on the menu at Gyuen Dang Seongsu Main Branch](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-08-1lhps-900.webp)

![A menu page at Gyuen Dang showing the omurice option](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-09-54b2p-900.webp)

If there'd been more of us, we could've tried the omurice too — a little disappointing since it was just the two of us. The brie cheese omurice looks like it'd be delicious. I love brie cheese (...?). But then choosing omurice and splitting a single tenderloin gyukatsu felt like too much of a loss — I wanted to eat my fill of gyukatsu.

![The brazier and side dishes set up before the gyukatsu arrives](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-10-1yev3-822.webp)

There it is, my gyukatsu. Haven't had gyukatsu in a while. Such a gorgeous color.

![A full table setting with tenderloin gyukatsu showing its reddish cross-section](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-11-rmwpo-900.webp)

![The tenderloin gyukatsu set served with rice and miso soup](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-12-tzr5v-900.webp)

## Before you grill: letting the tabletop brazier heat up

I was hungry so I wanted to grill it fast, but when I put the meat on too soon, nothing cooked. The next table was sizzling away while ours stayed completely silent. Took the meat back off. While waiting for the brazier to heat up, I looked around — friends hanging out, couples on dates, families at other tables too. Seems like a great Seongsu Station lunch spot, and also a good pick for a Japanese food date in Seongsu — a proper Seongsu gyukatsu restaurant.

![A piece of gyukatsu placed on the tabletop brazier](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-13-1cpil-900.webp)

![Tenderloin gyukatsu cooking on the heated brazier](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-14-1o6ko-900.webp)

### What is the tastiest doneness for tenderloin gyukatsu?

After waiting a bit and putting it back on, it started sizzling and cooking. I figured since it's beef, cooking it just a little would be enough, but actually grilling it fairly long, until nicely browned, turned out to be the tastiest.

![A piece of gyukatsu grilled to a golden-brown outside](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-15-10q3a-900.webp)

![A cross-section of gyukatsu still red on the inside](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-16-14xpj-900.webp)

The piece I cooked less had a browned outside but was almost raw inside, kind of like eating grilled yukhoe (beef tartare). Of course it's tasty no matter how you eat it — how could it not be. But for my taste, the doneness that worked best was crispy on the outside. Find that sweet spot where the outside is crispy but the inside stays juicy.

![Tenderloin gyukatsu grilled crispy on the brazier](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-17-iq65a-1200.webp)

We were happily eating away when suddenly the brazier flame shot up, haha. The next table was whispering about it.

> "I think it's a campfire" (whisper whisper)

## Gyukatsu grilled in Isigny butter

Anyway, after eating a few pieces plain, we grilled the rest in the Isigny butter they give you. This was my first time seeing a gyukatsu place offer butter. At least none of the gyukatsu places I've been to before gave you butter. Thinking about it, when you grill steak, don't you toss in rosemary at the end and baste it with melting butter? Grilling in butter has to make it even tastier.

![Isigny butter served alongside the gyukatsu](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-18-phd76-900.webp)

![Butter placed between two pieces of gyukatsu on the brazier](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-19-9vdei-900.webp)

Following the "how to eat gyukatsu" card on the table before the food arrived, I put two pieces of gyukatsu on the grill and tucked a quarter piece of butter between them — once it started grilling in the butter, this incredible savory smell came off it.

![Gyukatsu turned golden brown after grilling in butter](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-20-j8kfh-900.webp)

![Butter-grilled gyukatsu with a small dish of special sauce](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-21-1sa4t-900.webp)

### Is gyukatsu good without butter, and how does the house sauce taste?

It's not just my imagination — grilling in butter makes it noticeably more golden brown. The gyukatsu itself is savory enough that you don't strictly need the butter; if you don't like things too greasy, grilling it plain is plenty satisfying too. But for me it wasn't really about a taste difference — I just loved the smell of the butter grilling, so I kept using it. And while it's tasty dipped plain in just wasabi and salt, the sauce they give you really pairs beautifully with the gyukatsu. It's a mildly sweet-and-tangy sauce that keeps you eating piece after piece of what could otherwise get a little heavy.

![The finished meal at Gyuen Dang, rice and miso soup cleared](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-22-1gim7-900.webp)

## Salad and wasabi refills, and finishing the rice at Gyuen Dang

Eating it all went by in a flash. We refilled the salad, refilled the wasabi once more, and cleaned up the miso soup and rice completely. It'd been a while since I'd had gyukatsu, and this place was so good it put me in a great mood. While paying, I apparently started doing a little shoulder dance without realizing it, and my friend next to me said,

> "...? Are you dancing right now?"

That's just how good it was.

![Omurice served at another table at Gyuen Dang](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-23-b98d2-900.webp)

![Gyuen Dang's omurice topped with fluffy egg](https://img.superchart.com/images/seongsu-gyukatsu-anshin-doneness-refill/seongsu-gyukatsu-anshin-doneness-refill-24-dfxj3-900.webp)

That fluffy omurice at another table looked so cute I quickly snapped a photo of Gyuen Dang's omurice. Next time I'll order the brie cheese omurice. If you're looking for a place for lunch near Seongsu Station, highly recommend.

Gyuen Dang Seongsu Main Branch / 2nd floor, 10 Yeonmujang 7-gagil, Seongdong-gu, Seoul

## Tips for visiting Gyuen Dang Seongsu Main Branch

- Tenderloin gyukatsu is ₩24,000 — if there are two of you, order one each to eat your fill
- There can be a wait, so booking ahead on Naver is recommended
- Let the brazier heat up fully before putting the meat on so it sizzles properly
- The tastiest doneness is crispy outside, juicy inside
- The table instructions explain how to tuck a quarter piece of Isigny butter between two pieces of gyukatsu while grilling
- Salad and wasabi are refillable
- Take part in the Naver/Google review event for a free mini okonomiyaki

## Where it is

- Gyuen Dang Seongsu Main Branch (규엔당 성수본점)
- 10 Yeonmujang 7-gagil, Seongdong-gu, Seoul, South Korea
- 서울특별시 성동구 연무장7가길 10 2층
- 37.5428877, 127.0552985
- Google Maps: https://www.google.com/maps/search/%EA%B7%9C%EC%97%94%EB%8B%B9%20%EC%84%B1%EC%88%98%EB%B3%B8%EC%A0%90/@37.5428877,127.0552985,17z

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