10 Viral Coffee Trends That Broke The Internet

If you've spent any time on coffee TikTok, Instagram or YouTube over the past few years, you'll know how quickly a coffee trend can take over the internet. One day you've never heard of it, the next it's everywhere. Cafes are adding it to their menus, creators are filming their reactions and home baristas are attempting their own versions in the kitchen.

Some of these trends were genuinely innovative, some were visually spectacular and some were simply so unusual that people couldn't stop talking about them. While a few have settled into niche corners of the coffee world, others continue to pop up years after their viral moment.

Whether you loved them, hated them or completely forgot they existed, these are 10 viral coffee trends that broke the internet and left their mark on coffee culture.

1. Dalgona Coffee

Dalgona coffee was the drink of 2020 Coronavirus lockdown error. Whip together equal parts instant coffee, sugar and hot water until it forms a thick, fluffy, caramel coloured foam, then spoon it over a glass of milk. The result looked almost like a dessert rather than a coffee.

Part of the appeal was that it gave people something to do during those long days stuck at home. It was visually satisfying, easy to film and didn't require any fancy equipment beyond a whisk or a fork. For a brief moment, everyone's kitchen turned into a tiny cafe.

Once life got busier again, the appeal of standing there whisking for ten minutes started to wear thin. Dalgona was always more of a project than a daily drink, and once the novelty faded, so did most people's enthusiasm for the arm workout that came with it.

That said, it hasn't disappeared completely. You'll still spot it occasionally on cafe specials boards or whipped up by people feeling a bit nostalgic for 2020.

2. Butter Coffee

Butter coffee, often associated with the "Bulletproof" diet trend, involves blending coffee with butter and sometimes MCT oil until it becomes a frothy, creamy drink. The idea was that this combination could provide sustained energy and mental clarity, fitting neatly into the keto and low carb wave that was popular at the time.

For a while, butter coffee felt like the ultimate biohacker breakfast replacement. It promised focus, fullness and fat burning all in one cup, which made it an easy sell to anyone chasing a productivity edge.

As the broader keto trend cooled off and more people questioned the actual benefits, butter coffee slid out of the spotlight too. The texture also divides people. Some love the creamy, almost milkshake like consistency, while others find a greasy cup of coffee a tough sell first thing in the morning.

You can still find butter coffee around, particularly among dedicated keto and low carb communities.

3. Nitro Cold Brew Hype

Nitro coffee had a genuine moment. Cold brew infused with nitrogen gas, poured from a tap so it cascades into the glass with that thick, creamy, Guinness like head. It looked impressive, photographed beautifully, and the texture was unlike anything else on a cafe menu.

The hype came from how different it felt to drink. No ice needed, a velvety mouthfeel, and a visual cascade effect that made for great content. Cafes loved it because it gave them something premium and Instagrammable to charge a bit more for.

The catch was the equipment. Nitro taps and kegging systems are an investment and not every cafe found the demand justified the cost long term. As the initial buzz settled, many venues quietly removed it from their offering or kept it as an occasional special rather than a permanent fixture.

Nitro cold brew is still around, especially at larger chains and dedicated specialty venues, but it's settled into being a solid menu option rather than the trend everyone was talking about.

4. Siphon Brewing in Cafes

For a stretch, siphon brewers were popping up on cafe counters everywhere. The glass globes, the open flame, the bubbling chamber, it looked like a small science experiment and customers loved watching it happen right in front of them.

The appeal was theatre. Siphon brewing is genuinely fascinating to watch, and it gave cafes a point of difference that drew people in just to see the process.

The problem was practicality. Siphon brewing is slow, requires close attention, and isn't exactly built for a busy cafe trying to get through a queue of orders. Once the novelty of watching it wore off for regular customers, many venues found it hard to justify the time and staff attention it demanded during a rush.

Siphon brewing hasn't gone away though. It's just shifted into a more niche space, often found at specialty cafes or coffee events where the focus is on the experience rather than speed.

5. Rainbow Latte Art

For a while, rainbow lattes were everywhere. Bright, multicoloured swirls and designs poured or drawn into the foam of a latte, often using natural or food safe dyes to create eye catching patterns.

The appeal was obvious. It was colourful, playful and made for an easy photo. Cafes leaned into it for special events, themed days and seasonal menus, and customers were happy to queue up for something a bit different.

The downside was that it took time. Creating detailed rainbow designs isn't something a barista can do quickly during a morning rush and the dyes themselves added an extra cost and step that didn't always make sense for everyday service.
Rainbow latte art still pops up from time to time, particularly around events like Pride or for special occasions, but it's no longer something you'd expect to see as a regular menu item.

6. Charcoal Coffee

Charcoal coffee, often made by adding activated charcoal to your milk and pouring it into your espresso base to make a latte, had a brief but memorable run. The drinks were striking, jet black and dramatic looking, often paired with bright contrasting milk for visual effect.

The trend rode on the back of the broader activated charcoal wave, which was being added to everything from toothpaste to ice cream at the time. It promised detoxifying benefits and looked unlike anything else on the menu, which made it an easy talking point.

As health claims around activated charcoal were increasingly questioned, and as people realised the taste didn't really add much to the coffee itself, the trend faded. Visually striking only goes so far if the drink underneath doesn't offer much.

You'll occasionally still spot a charcoal latte on a specialty menu, usually leaning into the aesthetic rather than any health angle, but it's largely faded from everyday cafe culture.

7. "Unicorn" Drinks

Unicorn drinks were less about coffee and more about colour. Bright pastel layers, glitter, whipped cream and rainbow sprinkles piled onto frappes and iced drinks, often with little resemblance to traditional coffee at all.

These drinks were built for social media from the start. They were sweet, playful and instantly recognisable, appealing especially to younger customers looking for something fun and shareable rather than a classic coffee fix.

The trend faded as the sheer sugar content and artificial colouring started to feel a bit much for regular drinking, and as the next colourful trend came along to take its place. Unicorn drinks were always more of a treat than a staple, and treats tend to come and go quickly.

Variations still show up seasonally at larger chains, especially around school holidays, but the unicorn drink as its own category has mostly moved on.

8. Extremely Strong Coffee

For years, coffee lovers have been fascinated by one question: how strong can a cup of coffee get?

From highly concentrated brews to coffees specifically marketed for their caffeine content, "extremely strong coffee" has become its own niche within the coffee world. Videos showcasing ultra-caffeinated brews, oversized espresso shots and intense coffee challenges continue to attract millions of views online, with many people curious to see just how much caffeine can be packed into a single cup.

Part of the appeal is the novelty. Strong coffee carries a certain shock factor, whether it's a brew claiming to contain several times the caffeine of a regular cup or a recipe designed to maximise extraction and intensity. For some, it's about the energy boost and for others, it's just curiosity.

While flavour isn't always the primary focus, the trend has helped spark conversations around caffeine content, brewing methods and the difference between a coffee that tastes strong and one that is genuinely high in caffeine. Whether you're looking for maximum caffeine or simply exploring different brewing styles, extremely strong coffee remains one of the internet's most talked-about coffee trends.

9. Oleato (Starbucks Olive Oil Coffee)

When Starbucks launched its Oleato range, coffee with cold pressed extra virgin olive oil mixed in, it raised more than a few eyebrows. The drinks launched in Italy in February 2023, with plans to expand to other markets including Southern California, Japan, the Middle East and the United Kingdom.

The idea drew on Mediterranean traditions, where olive oil is a daily staple. The concept reportedly came from former Starbucks CEO Howard Schultz, who observed the ritual of consuming olive oil during a trip to Sicily. The promise was a smoother, richer texture and a more complex flavour, something a bit more luxurious than your average latte.

Reactions were mixed, to put it mildly. Plenty of people were curious enough to try it, but the idea of olive oil in coffee was a tough sell for a lot of regular customers, and the drinks never quite became a staple order the way other Starbucks releases have.

Oleato is still around in some markets, but it remains more of a curiosity than something most people are ordering on a daily basis.

10. The Spring Onion Latte

Of all the drinks on this list, the spring onion latte might be the one that raised the most eyebrows. The trend, which became popular in China, involves adding chopped spring onions to an iced latte, with the green parts of the scallion sprinkled on top for a finishing touch.

The appeal came from the contrast. The crunchy texture of fresh spring onions against the smoothness of the latte was meant to create a multisensory drinking experience, with the sharpness of the onion balancing the bitterness of the coffee. For a drink that sounded so unusual, it spread quickly once people started filming their reactions. 

We tried it ourselves, and the honest verdict was that it didn't quite land. The texture ended up slippery with an unexpected crunch, and it didn't have the silky boba like quality some had hoped for. It's safe to say this one fell into the "Interesting to watch, less fun to drink" category, and it disappeared from feeds about as quickly as it arrived.

That said, full credit to anyone willing to try it on camera. Not every coffee experiment needs to become a permanent menu item to be worth talking about.

Coffee Trends Come and Go and That's Part of the Fun

Looking back at this list, it's incredible how quickly coffee trends can capture the internet's attention. Some of these drinks dominated social media feeds, cafe menus and group chats for a brief moment, while others managed to carve out a more permanent place in coffee culture.

Whether they were genuinely innovative, visually spectacular or simply impossible to ignore, each of these trends got people talking about coffee in a new way. Some are still around today, some have become niche favourites and others are remembered mainly through old TikToks and Instagram posts.

Whether you were whipping Dalgona coffee during lockdown, curious enough to try an Oleato or still wondering who first decided to put spring onions in a latte, these trends are a reminder that coffee culture is constantly evolving, and that's part of what keeps it interesting.

Which coffee trend would you love to see make a comeback, and which one deserves to stay in the history books?