Unusual drink café in Seongsu: perilla smoothie, latte at Iridescent
In short
Iridescent is an unusual drink and dessert café on Seoulsup 4-gil in Seongdong-gu, Seoul, between Seoulsup and Ttukseom Station in the Seongsu area. On a first visit after a weekend walk in Seoulsup, the writer ordered the signature perilla leaf smoothie and the Iridescent latte; any hesitation about a perilla leaf drink vanished after one refreshing sip, and the Iridescent latte was smooth and clean. If you want to add an unusual drink to a Seoulsup walk, Iridescent is a good fit.

Good to know
- Getting there
- Ttukseom Station Exit 8 · 7-min walk (store listing, Oct 6, 2026)
- Location
- 1st floor, 20-1 Seoulsup 4-gil, Seongdong-gu, Seoul
- What we ordered
- Perilla leaf smoothie (signature), Iridescent latte
- Seating
- Well-spaced seats, comfortable for conversation
as written by the visitor on Jul 26, 2026
I love hunting down new spots on weekends. This time I was strolling slowly around Seoulsup, looking for a nice Seongsu café, and ended up at Iridescent, which I had already saved.


Iridescent is known for its unusual dessert and drink menu that you rarely see elsewhere, so my expectations were high. After trying it myself, I totally understood why so many people come~
What is the vibe at Iridescent like?
A special space that breaks away from the ordinary: 'Iridescent'


Iridescent is a Seongsu café with a stylish exterior, clean interior and calm lighting. I found it while searching for a nearby café after my walk, and the exterior caught my eye right away. It was great for photos and satisfying for a relaxed rest.
Above all, I liked that it is close to Seoulsup, so it is an easy stop after a light walk. The mood suits a date too, and I already want to come back.
What should you order on a first visit to Iridescent?
A menu that sparked my curiosity


On my first visit I ordered the signature perilla leaf smoothie and the Iridescent latte. The menu had so many drinks whose names alone made me laugh.
Besides the flagship perilla leaf smoothie, drinks with unusual combinations caught my eye, and choosing was fun because so many were things you rarely see. Since it was my first visit, I decided to try the most famous one first.
Is the perilla leaf smoothie really good?
The 'perilla leaf smoothie' completely changed my expectations


The Iridescent perilla leaf smoothie has a fresh, tangy flavor followed by a herb-like fragrance, so it was easy to enjoy. Honestly, I hesitated at first just from the name. My first thought was, would a drink made from perilla leaves actually taste good? But the moment I took a sip, that worry disappeared.
The tangy freshness came first, then a subtle aroma followed naturally. It was not strong; it had a light, herb-like charm.
Eating it together with the toppings brought out the flavor even more, and it had a personality unlike ordinary fruit drinks. Now I see why it is the first thing many people recommend when talking about unusual desserts.
What does the Iridescent latte taste like?
The Iridescent latte with a subtle charm that lingers


The Iridescent latte had a smooth texture and a clean finish, and it was not overly sweet. The latte I ordered alongside it was better than I expected. It balanced well even next to a distinctive drink like the perilla leaf smoothie, and I felt it was an easy choice for anyone.
I was glad that it is not only a place with quirky dessert menus; the basics are done really well too.
How were the staff and seating?
A visit that satisfied down to the small details


The Iridescent staff explained the menu kindly, so even first-timers can order without pressure. The atmosphere was comfortable, and the seats were spaced well enough for a good conversation.
There were lots of pretty spots for photos, so I naturally kept picking up my camera. Above all, trying new drinks was so much fun that I want to take on the other ones one by one next time.
Verdict: an unusual drink after a Seoulsup walk


This visit to the Seongsu café 'Iridescent' was much more satisfying than I expected. If you want to try new flavors and unusual desserts instead of ordinary drinks, it is well worth a visit. The perilla leaf smoothie in particular completely changed my preconceptions, and the Iridescent latte was so well made that the two make a great pair.
If you are planning a Seoulsup walk this weekend, dropping by for something different would make a nice route.


If you want a different kind of experience, I recommend Iridescent when you are looking for a Seongsu café with unusual desserts. It was a satisfying time, and I want to go back to try more new menu items~
Where it is
20-1 Seoulsup 4-gil, Seongdong-gu, Seoul, South Korea (1st floor)서울특별시 성동구 서울숲4길 20-1 1층






