"Good for 5 Hours" — 4 Questions Dunkin's 1.4L Bucket Coffee Craze Poses to Korea's Large-Format Beverage Market

💡 Image Notice: A copyright-free image dedicated to 'bucket coffee' could not be secured. Related images can be found at Wikimedia Commons - Iced Coffee or on the Dunkin' official site.

Why should you pay attention now? America's largest coffee chain, Dunkin', is flipping conventional wisdom in the beverage market with 'bucket coffee.' Before this trend lands in the K-coffee market, it's time to understand the context.

TL;DR

• Dunkin' has piloted an approximately 1.4L (48 oz) bucket coffee at select stores in Massachusetts and New Hampshire
• Immediate sell-outs upon launch; consumers flooded social media with reviews like "I sipped it for a solid 5 hours"
• Requests for a national rollout are pouring in, but an official launch date remains undecided
• Korea is already among the world's top per-capita coffee consumers — its capacity to absorb a large-format trend is under the spotlight
• Beyond mere novelty, it reads as a value-for-money and emotional-value marketing strategy for coffee brands

The Facts: What Is Bucket Coffee?

According to US media including Newsweek, dated February 24, 2026 (local time), Dunkin' began piloting a 48 oz (approximately 1,420 mL) super-sized beverage at select stores in Massachusetts and New Hampshire. The name is equally straightforward — 'Bucket.'

The price is higher than buying two small or medium-sized drinks, yet the consumer reaction was explosive. Social media overflowed with posts like "I sipped it for a solid 5 hours" and "Even without the bucket, please launch this drink nationwide," and pilot store inventory was rapidly depleted.

According to the New York Times (NYT), Dunkin' did not originate this trend. In the US, independent cafés began offering 34 oz (approximately 1L) bucket coffees as early as 2025, already leading the large-format trend. Dunkin' essentially picked up on this grassroots movement and scaled it up to the mainstream franchise level.

The Spread Mechanism: Why Is It Trending Now?

1. The Social Media 'Proof-Shot' Economy

Oversized drinks are visually striking. When held in hand, the exaggerated size contrast creates content perfectly optimized for TikTok and Instagram Reels. Videos of people drinking bucket coffee spread as "how much can you drink" challenge formats, generating organic virality without the brand spending a single extra dollar on marketing.

2. The Value-for-Money Psychology

As inflation persists, consumers sensitive to the "cost per cup" are drawn to large-format options. The logic follows that sipping 1.4L throughout the day means saving the cost and time of revisiting a coffee shop.

3. The Hyper-Caffeination Culture

In the US, 'caffeine optimization' has already established itself as a self-management trend. Coupled with long working hours and the spread of remote work, demand for coffee as "fuel to get through the day" is driving the shift toward larger formats.

Context & Background: The Connection to Korea

Korea is one of the world's top coffee-consuming nations. Adult per-capita annual coffee consumption is approximately three times the global average, and there are more cafés than convenience stores. Signs of the large-format trend are already visible in the Korean market:

• Rapid growth of low-price, large-format chains like Mega Coffee and Compose Coffee
• Expansion of 1L bottle coffee lineups at convenience stores
• The established social media culture of showing off 'iced Americano, 2 shots, extra large'

If Dunkin' officially launches bucket coffee in Korea, or a domestic brand beats them to a similar format, rapid virality is a real possibility.

4 Key Questions

① Value-for-Money or Waste?

Finishing 48 oz of coffee alone is no easy feat. Approached as a shareable drink format, it could become a new category that encourages group consumption. Could Korean cafés adapt this as a 'table share' menu item?

② Are There Health Risks?

If a 1.4L drink contains multiple espresso shots, it could easily exceed the daily recommended caffeine intake (400mg for adults). How Korea's Ministry of Food and Drug Safety would regulate this is also worth watching.

③ How Will Korea's Top Low-Price Brands Respond?

Domestic low-price coffee chains like Mega Coffee and Compose Coffee already have a stronghold in the large-volume market. They are likely the players best positioned to absorb the bucket format the fastest.

④ The Strategic Significance for Dunkin' Korea

Dunkin' already holds a major franchise presence in Korea. If the US pilot results are positive, the Korean market — with its cultural receptiveness — could be among the first overseas expansion candidates.

Outlook

Dunkin's official stance is limited to "we'll watch consumer reaction," and a national rollout remains undecided. However, given the speed of social media virality and the frequency of consumer requests, further expansion within the first half of 2026 is plausible. Korea's beverage trends have historically absorbed US-origin social media trends rapidly (bubble tea, Dalgona coffee, tanghulu), so this bucket coffee trend deserves close attention.

Checklist

References

• Maeil Business Newspaper - '1.4L Super Bucket Coffee'…causing a sensation at US Dunkin'
• Asia Economic Daily - US Dunkin' 1.4L large-format coffee gains popularity
• E Daily - Coffee served in a bucket — gather all who thirst for large format
• Electronic Times - Caffeine addicts, unite: US Dunkin' bucket coffee goes viral on SNS
• Nate News - US Dunkin' 1.4L super bucket coffee craze