Kachi Seoul Seongsu Popup: A Practical Guide to the Korean Dessert Stop

Kachi Seoul’s Seongsu popup is a food-focused stop for Korean desserts at 16 Ttukseom-ro 9-gil, Seongdong-gu, Seoul. For readers curious about Korean flower rice cakes, the popup is especially relevant because Kachi Seoul is connected in the sources with rice cakes, hangwa, yakgwa, and hwapyeon, a flower-topped rice cake item listed for the Seongsu location.¹²³

Kachi Seoul’s official website describes the brand as working with rice cakes, hangwa, and Korean desserts, with traditional flavors reinterpreted in a modern way. The same official site lists the Seongsu store along with locations at Lotte Department Store Myeongdong, Lotte Department Store Jamsil, and a reservation-only Seocho location.²

What to Know About the Kachi Seoul Seongsu Popup

The most consistently supported detail is the Seongsu address: 16 Ttukseom-ro 9-gil, Seongdong-gu, Seoul. Popga lists the Kachi Seoul popup as an operating F&B popup at that address, while Kachi Seoul’s official site also identifies the Seongsu store at the same location.¹² Diningcode gives the same address and additionally lists the lot-number address as Seongsu-dong 2-ga 328-13.³

For the popup period, Popga lists the run from October 14, 2025 to December 31, 2026. Dayforyou’s popup search results also show a Kachi Seoul popup at the Seongsu address running from October 14, 2025 to December 31, 2026, although another result on the same platform separately shows a March 4 to June 8, 2026 schedule, so the listings are not perfectly simple to read.¹⁴

Hours also need a careful look. Popga lists Monday to Friday hours as 10:30 to 18:30 and Saturday hours as 10:30 to 16:00.¹ Wepick Letter, in a roundup published on October 16, 2025, listed the popup for October 14 to December 31, 2025, with hours from Tuesday to Saturday, 10:30 to 18:30.⁵ Because the sources differ on both the end date and the weekly schedule, the safest way to use the available information is to treat the Seongsu address as strongly supported and check the latest listing before making a time-sensitive visit.

There is also a small visitor benefit in the popup information. Popga notes that visitors can receive one Kachi Seoul yakgwa when uploading to social media.¹ The source does not provide extra conditions beyond that summary, so it is best not to assume details such as platform rules, daily quantity, or whether the benefit changes over time.

Why Hwapyeon Matters for Korean Flower Rice Cakes

The flower-rice-cake angle comes through most clearly in the menu information for Kachi Seoul’s Seongsu location. Diningcode lists “Hwapyeon” at 5,000 won and describes it as jeolpyeon made with one flower placed on top.³ That is a compact but useful description: hwapyeon is not just a poetic name in this listing, but a rice cake associated with an actual flower element.

The same page places hwapyeon alongside other Korean dessert items, including dried persimmon jeonggwa rice cake, “Bam Bam Bam” yaksik, walnut glutinous rice cake, songpyeon, and yakgwa.³ For someone browsing Seongsu popups, this helps set expectations. Kachi Seoul is not presented in the sources as a general bakery or cafe concept; the available records frame it around Korean sweets and rice-cake-based desserts.

Hwapyeon also appears in a separate department-store gift context. Business Post reported that Lotte Department Store expanded dessert gift sets for Chuseok demand, and that Kachi Seoul introduced the “Hwapyeon Gift 18-piece” for 41,000 won at a holiday popup on the first basement floor of Lotte Department Store’s main branch. The report described the gift item as non-glutinous rice songpyeon decorated with edible flowers.⁶

That department-store example is not the same as the Seongsu popup listing, so it should not be treated as proof of what is always available in Seongsu. Still, it supports the broader point that Kachi Seoul’s flower-decorated rice cakes are part of the brand’s documented dessert range. It also explains why the phrase Korean flower rice cakes fits this topic naturally, especially when discussing hwapyeon rather than using the phrase as a broad label for every product.

A Reader-Friendly Way to Plan Around It

If you are mapping a Seongsu dessert walk, the Kachi Seoul popup is easiest to understand as a Korean dessert stop with a gift-friendly identity. The strongest source-backed details are the address, the Popga and Dayforyou long-run schedule, the Popga hours, and the menu references to hwapyeon, yakgwa, songpyeon, and other traditional-style sweets.¹³⁴

The schedule differences are the main caveat. Wepick Letter’s October 2025 roundup used a shorter 2025 period and different weekly hours, while Popga and Dayforyou show the longer 2025 to 2026 run.¹⁵⁴ Rather than smoothing over that difference, it is more helpful to say plainly that the public listings do not fully match.

Quick FAQ

Where is the Kachi Seoul Seongsu popup?

The supported address is 16 Ttukseom-ro 9-gil, Seongdong-gu, Seoul. Popga lists the popup there, and Kachi Seoul’s official site lists its Seongsu store at the same address.¹²

What is hwapyeon at Kachi Seoul?

Diningcode lists hwapyeon at 5,000 won and describes it as jeolpyeon made with one flower placed on top.³ Business Post also reported a Kachi Seoul “Hwapyeon Gift 18-piece” made with non-glutinous rice songpyeon decorated with edible flowers in a Lotte Department Store holiday popup context.⁶ The Kachi Seoul Seongsu popup is best approached as a source-backed Korean dessert stop rather than a trend inflated with vague claims: the address is clear, the dessert identity is documented, and the hwapyeon connection gives readers a concrete way to understand its Korean flower rice cakes.