Seongsu date-night restaurant with flounder and vongole: Kongkase

In short

Kongkase Seongsu is a Western restaurant on the main road at the entrance to Seoul Forest's Atelier Street in Seongdong, Seoul. The writer booked a weekday dinner through Catch Table and ordered vongole pasta and flounder with celeriac puree; the pre-meal bread, the clean clam savouriness of the vongole and the crisp-outside, moist-inside flounder steak were all evenly well made. With its red-brick exterior, high ceilings and wide gaps between tables, Kongkase Seongsu suits a quiet date in Seongsu-dong or an unhurried dinner with friends.

Table set with the ordered Western dishes

Good to know

Location
1F, 11 Wangsimni-ro 5-gil, Seongdong-gu, Seoul — on the main road at the entrance to Seoul Forest's Atelier Street
Hours
Daily 11:30–21:30
Break time
Weekdays 15:30–17:00 / Weekends 16:00–17:00
Last order
Weekday lunch 14:30, weekend lunch 15:00, dinner 20:30
Parking
Use nearby public parking lots
Dishes ordered
Vongole pasta, flounder with celeriac puree
Reservation
Booked on Catch Table for a weekday dinner

as written by the visitor on Aug 19, 2026

Why I picked Kongkase Seongsu for dinner

Kongkase Seongsu is a Western restaurant serving pasta, risotto, and steak around Seoul Forest and Seongsu-dong. After a while without catching up with a dear friend, I wanted somewhere with a good atmosphere for a cozy meal in Seongsu-dong.

I usually enjoy dishes like pasta and risotto, so I wanted somewhere a bit more upscale and refined than usual. While comparing several places carefully, I came across Kongkase Seongsu, known for reinterpreting classic dishes with a modern, approachable sensibility.

First look upon arriving at Kongkase Seongsu

Friends had often mentioned it as a tidy, high-quality pasta spot near Seoul Forest, so I was excited even before visiting. There are countless restaurants around Seoul Forest, but the reviews describing a place with course-like, polished cooking in a comfortable setting stood out to me.

It matched exactly what I was looking for in an upscale, clean Western restaurant near Seoul Forest, so I booked a weekday dinner slot on Catch Table ahead of time and headed over without rushing.

Kongkase Seongsu hours, break time and parking

  • Open daily 11:30 AM to 9:30 PM
  • Weekday break time 3:30–5:00 PM / last order 2:30 PM
  • Weekend break time 4:00–5:00 PM / last order 3:00 PM
  • Last order 8:30 PM
  • Parking is available at nearby public lots

The red-brick exterior and full-height windows

Exterior of Kongkase Seongsu on the main road along Seoul Forest's Atelier Street

Kongkase Seongsu sits right on the main road at the entrance to Seoul Forest's Atelier Street, so even first-time visitors can find it easily. It's also within easy walking distance of the subway station. As soon as I arrived, the white-toned storefront tucked into the ground floor of a classic red-brick building caught my eye.

White-toned entrance and awning on the ground floor of a red-brick building

The English signage in a clean font on the awning gave a sophisticated impression, and the side of the building was finished with large floor-to-ceiling windows that felt open and airy even from outside. The tidy yet calm feeling from the exterior made meeting my friend feel even more special.

Looking at the entrance, where the warmth of red brick met the modernity of white tones, I felt confident I'd found the right Western restaurant near Seoul Forest for a formal gathering or date. The stylish mood right from the entrance showed the real character of a proper pasta spot in Seongsu.

Inside: high ceilings and cozy plant-filled styling

Interior of the restaurant with high, white-toned ceilings

Stepping inside, the space felt even more spacious and comfortable than it looked from outside. The high ceilings kept it from feeling cramped at all, and the clean white walls and ceiling brightened the whole space. The floors and tables, in a substantial wood tone, added a luxurious coziness without feeling too light.

View of the dining hall with wood-toned tables

Lush green plants placed throughout the restaurant added a nature-friendly touch to the interior.

Interior space decorated with green plants

Soft natural light through the floor-to-ceiling windows and warm lighting made the dining space even more romantic.

Dining area lit by natural light through floor-to-ceiling windows

The tables were spaced generously enough that we weren't bothered by noise and could focus fully on our conversation. The comfortable interior and orderly mood made for a great atmosphere to enjoy pasta near Seoul Forest.

Tables arranged with generous spacing

I could see exactly why this pasta spot in Seongsu, with its atmospheric setting, keeps drawing loyal customers.

What is on the menu, and how was the pre-meal bread?

Kongkase Seongsu's menu
Menu page listing pasta and risotto dishes
Menu page featuring steak dishes

After being seated and kindly guided by the staff, I took my time looking over the menu. Kongkase Seongsu's menu was full of pasta and risotto with creative touches on classic Western cooking, plus carefully prepared steak dishes.

Table set with the ordered Western dishes

The pasta lineup, staying true to the basics while adding original sauces, was especially appealing. After some thought, I ordered the vongole pasta for its deep, refreshing savoriness and the flounder with celeriac puree, an elegant fish dish.

Table setting right after ordering
Warm, freshly baked pre-meal bread

While we chatted after ordering, warm, freshly baked pre-meal bread was served first. Biting into the crisp-outside, moist-inside bread, a savory and nutty flavor spread through my mouth, whetting my appetite nicely before the meal began in earnest.

Even a small piece of pre-meal bread showed the freshness of the ingredients and the care put into it, reflecting the polished quality of this Western restaurant near Seoul Forest. It also raised my anticipation for the pasta to come.

Vongole pasta with deep clam savouriness

Vongole pasta piled generously with clams

Soon, a neatly plated vongole pasta arrived at our table. With plenty of clams, perfectly cooked noodles, and a light, oily sauce all coming together, the look alone was mouthwatering.

Close-up of vongole pasta with light oil sauce

Twirling the noodles onto my fork along with the clam meat for a bite, I couldn't help but sigh with satisfaction at the deep, refreshing flavor of clam that filled my mouth. There was none of the greasy heaviness typical of oil pasta — instead, the clean, natural umami of the clams balanced perfectly with subtle garlic and herb notes.

Noodles twirled on a fork from the vongole pasta

The noodles were cooked to a perfect al dente, giving a pleasantly chewy bite with every mouthful. The clams were also very well cleaned of grit, so they were tender to chew with no off-putting smell.

Well-cleaned clam meat with pasta noodles

Tasting the refined depth of flavor here, I could clearly understand why this place is considered one of the top pasta spots in Seongsu. My friend also couldn't stop praising the clean yet lingering flavor of the sauce.

How does the flounder with celeriac puree taste?

Plated flounder steak with celeriac puree

Following the vongole pasta came the main dish: flounder with celeriac puree. A thick, golden-seared flounder steak sat over a broad layer of smooth celeriac puree, accompanied by roasted baby potatoes, mini cabbages, and a delicately placed tapenade for extra savoriness.

Flounder dish with baby potatoes and mini cabbages

Cutting into the flounder carefully with a knife, the outside was crisp while the inside was moist and flaked apart gently.

I took a piece of flounder with a bit of the creamy celeriac puree and tapenade. The clean, nutty flavor of the fish, the subtle sweetness of the celeriac, and the salty tapenade came together for an even richer flavor.

Moist flounder flesh cut open with a knife

Any fishy taste was completely absent, and the baby potatoes and mini cabbages added varied texture, letting me enjoy every last bite without feeling heavy. Both the pasta and the main dish showed such high quality that I could really feel this is a top-tier Western restaurant near Seoul Forest.

Final verdict: what kind of meal does Kongkase Seongsu suit?

Throughout the meal, the attentive and kind service from the staff was also impressive. Chatting slowly over carefully made dishes under the bright sunlight streaming through the windows, I lost track of time in a happy, relaxed way.

With atmosphere, taste, and kindness all in good balance, this place would suit an important anniversary or date, and just as easily a lunch with a close friend. There are countless restaurants around Seongsu-dong and Seoul Forest, but finding one that satisfies both ingredient freshness and depth of flavor isn't as easy as it sounds.

This visit to Kongkase Seongsu delivered a flawless experience on every front — from the stylish red-brick exterior to the cozy, refined interior, and above all, the clean clam flavor of the vongole and the light, elegant flounder with celeriac puree.

If you're planning a trip to Seoul Forest or a date in Seongsu-dong, I'd recommend trying the deeply flavorful pasta here along with a full Western-style course in a lovely setting. It's also a great option for anyone looking for a clean, high-quality pasta plate near Seongsu.

Where it is

Kongkase Seongsu콩카세 성수

1F, 11 Wangsimni-ro 5-gil, Seongdong-gu, Seoul, South Korea서울특별시 성동구 왕십리로5길 11 1층

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