Why GS25 and CU Are Running the Most Competitive Snack Game in the World
There is a particular kind of frustration that only happens in Korea. You see a photo of a snack on social media — a thick chocolate cookie filled with pistachio and shredded pastry, a cream bread so stuffed it barely holds its shape — and you walk into the nearest convenience store within the hour, only to find an empty shelf and a handwritten "sold out" sign. The product launched that morning. This is not a supply chain failure. This is strategy. And GS25 and CU have turned it into one of the most effective retail systems in the world.
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| One tear, and the cream just keeps coming — Yonsei Milk Cream Bread remains the most searched CVS item in Korea. |
In 2026, Korean convenience store chains are no longer just selling snacks. They are engineering scarcity, managing fandom, and releasing products the way entertainment companies release content — in drops, with countdowns, with collectable packaging, and with social media built into the core of the launch plan. Understanding how GS25 and CU operate their exclusive product systems is the key to shopping them effectively and to understanding why so many of these items are genuinely impossible to find outside of Korea.
The Open Run Phenomenon: When a Snack Becomes an Event
The term "open run" in Korean retail refers to the practice of rushing to a store the moment it opens — or, in the case of 24-hour convenience stores, the moment a limited drop goes live — to secure a product before it sells out. It sounds extreme until you look at the numbers. When GS25 launched its first batch of Dubai-style chocolate — a thick chocolate bar filled with pistachio and kataifi pastry inspired by a viral Dubai chocolatier — it opened pre-orders online. Twenty thousand units sold out in nine minutes. CU released 200,000 units of its own version on the same day and sold through the entire run by the time most people had finished lunch. Within days, both products were appearing on second-hand trading platforms at prices well above retail, with sellers treating a 4,000 won chocolate bar as a commodity worth flipping.
This is not an isolated case. It is a repeating pattern. The product changes — cream bread one month, a K-pop collaboration the next — but the mechanics stay the same: limited quantity, time-sensitive availability, social media amplification, and a resale market that forms almost immediately. The open run has become a cultural ritual for Koreans in their twenties and thirties, and convenience stores have leaned into it fully.
Yonsei Milk Cream Bread: The Item That Started a Category
If there is a single product that defined the modern era of Korean convenience store exclusives, it is the Yonsei Milk Cream Bread at CU. Named after Yonsei University's well-regarded dairy program, the bread is a soft white bun injected with a volume of fresh whipped cream that seems structurally improbable until you hold it — the bread is almost comically light, most of the weight coming from the cream inside. It became a social media fixture almost immediately after launch, not because of aggressive marketing, but because every person who bought one filmed themselves opening it, and the visual — cream billowing out from a torn bun — translated perfectly to short-form video.
The product has spawned an entire category. In 2026, both GS25 and CU maintain rotating cream bread lineups with seasonal flavors, collaboration editions, and premium variants that push the format in different directions. GS25 has experimented with matcha cream, black sesame, and strawberry variations under its fresh bakery program. CU has kept the Yonsei original as its flagship while layering in limited collab versions tied to entertainment properties. The category did not exist as a convenience store staple five years ago. Now it is one of the first things international visitors search for when planning a Korea trip.
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| GS25's YouUs line and CU's PBICK — the PB labels turning convenience store shelves into a collector's game. |
The PB Revolution: GS25's YouUs and CU's PBICK
Behind the viral collaborations and celebrity chef dosirak series is a quieter but equally significant development in Korean convenience store food culture: the rise of private brand product lines that have outgrown their budget origins and become identity markers for each chain.
GS25 operates its PB program under the YouUs label, with a lower-cost sub-range called Real Price positioned at the 1,000 won price point. At GS25, PB products now account for nearly 30 percent of total sales, with the Real Price range alone posting year-on-year growth of 125 percent. CU recently replaced its previous house brand with PBICK — a new label that launched in mid-2025 with melon gummies, chocolate churros, and affogato cookies, then expanded quickly to include black sesame latte snacks, double shrimp chips, and creme brulee crackers. PBICK sales rose 33.7 percent in its first month. Within weeks of launch, PB snacks were accounting for 16 percent of CU's total snack category sales.
What makes these PB lines interesting is not the price — it is the product logic. Items like the GS25 Cheese Rusk, a twice-baked crunchy bread cracker with an intensely savory yellow cheese coating available only at GS25, or the Black Truffle Shrimp Cracker, a premium riff on the classic Korean shrimp snack using 17 percent real shrimp and actual truffle flavoring, are not budget alternatives to national brands. They are deliberate flavor experiments designed to function as exclusive items that give customers a reason to choose one chain over the other sitting twenty meters down the same street.
K-Pop Collabs and the Fandom Economy
Korean convenience stores have been running K-pop collaborations for years, but the scale and sophistication of these partnerships in 2026 has moved well beyond limited-edition packaging. The GS25 x PLAVE collaboration — launched in January 2026 with the virtual idol group — offers a clear example of where this category has arrived. The entry product was a character-branded cream bread featuring visual motifs from each group member. GS25 announced follow-up drops including PLAVE-branded roasted corn snacks, baked sweet potato chews, and collectible photo ID sets. The bread sold over half a million units in ten days. It ranked as the number one trending keyword on GS25's internal app, outperforming all other limited-edition items and seasonal products running at the same time.
Most recently, GS25 launched a Super Mario Galaxy collaboration in May 2026, bundling limited-edition keyboard keycaps — collectible character items featuring Mario, Luigi, Yoshi, and Bowser — with fresh food items including a flagship Super Mario Lunch Box. Nine products across the lineup, running through the end of the month. The logic is the same as the PLAVE launch: the food is the vehicle; the collectible is the reason to move quickly. Fandom becomes the marketing engine, and the convenience store becomes the distribution point for a cultural moment rather than just a product.
The Chain Personality Divide: GS25 vs. CU
Among Koreans who follow convenience store culture closely — and there are many — a consensus has formed around the distinct personalities of the two major chains. GS25 is seen as the more innovation-forward chain: the first stop for whatever is generating social media noise this week, the one most likely to have the Instagram-worthy limited drop, and the consistent winner for coffee value through its Cafe25 program. CU is the chain associated with deeper flavor, more generous portions, and the dessert-first mentality — the Yonsei Cream Bread, the Baek Jong-won dosirak series, and a broader variety of alcohol options. A commonly cited shorthand on Korean online communities puts it simply: GS25 for kimbap and coffee, CU for desserts and late-night eating.
The practical implication for snack hunters is straightforward: visiting both chains during a single Seoul afternoon is not excessive. It is the only way to catch everything. GS25 releases new collaboration items on Tuesdays and Thursdays. CU runs weekly limited drops through its Pocket CU app. If you are chasing a specific viral item, the difference between finding it and finding an empty shelf can come down to which day of the week you walk in — and which chain you check first.
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| Tuesday drop day in Seoul — the hunt is half the experience. |
How to Shop Like a Local: The Open Run Playbook
For visitors planning to experience Korean convenience store culture at its most current, a few habits change everything. Download both the GS25 app and the Pocket CU app before arriving — both chains announce upcoming drops and allow location-based searches to find stores that still have stock. Check the 1+1 and 2+1 promotion stickers on the shelf edge before buying anything at full price; rotating buy-one-get-one deals are standard and tourists consistently miss them. If a product has a crowd around it or a staff member restocking it, that is not coincidence — it means something just dropped and you should pick it up before asking questions.
The open run culture can feel intense from the outside, but it is worth engaging with directly at least once. Standing in a GS25 at 8 a.m. on a Tuesday alongside locals who have clearly planned their morning around a snack launch is one of the more oddly joyful experiences Korean food culture offers. The product is almost secondary to the moment itself. Which snack would be worth setting your alarm for?
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