
A Brew That Shouldn’t Exist
Coffee has undergone many strange transformations. From pumpkin spice lattes to unicorn frappuccinos, we’ve seen it all, or so we thought. Enter the cult of people who drink coffee with butter and mayonnaise. Yes, mayonnaise. While adding butter to coffee has become somewhat normalized thanks to the “bulletproof” diet crowd, incorporating mayonnaise into the mix takes things to a level that makes even the most adventurous foodies cringe. Yet, this odd trend isn’t just a joke on the internet. There is an actual subculture, small but growing, that swears by it. They call it energizing, gut-healing, and even “life-changing.” Others call it disgusting, an affront to humanity, and a culinary crime. But why are people doing this? And what does it say about the way modern society approaches diet, health, and extremism?
The Origins of Butter in Coffee
Before we dive into the mayonnaise madness, let’s look at butter. Butter coffee started gaining attention in the 2010s, thanks to entrepreneur Dave Asprey’s “Bulletproof Coffee.” The idea was simple: add unsalted butter (preferably grass-fed) and medium-chain triglyceride (MCT) oil to coffee for a fatty, high-energy drink that supposedly provides stable energy and promotes fat-burning. It was marketed as a biohacker’s dream, and people who followed the keto diet embraced it. So, the butter part makes sense in a weird, trendy-diet way. But mayonnaise? That’s something else entirely.
The First Whisper of Mayonnaise Coffee
The story goes that mayonnaise coffee started as a joke on a food blog, when someone dared to swap cream with mayo just to see what would happen. Instead of throwing it away in disgust, the brave soul wrote about how “surprisingly creamy” it was. Soon after, scattered TikToks, YouTube challenges, and Reddit threads started popping up, with curious (and sometimes masochistic) drinkers trying mayo coffee for themselves. Some gagged, some vomited, and some swore it was “not as bad as you’d think.” That phrase “not as bad as you’d think”, became the gateway drug for a very strange kind of cult following.
Why Butter AND Mayonnaise?
So why combine them? If butter coffee is already a thing, what does mayo bring to the table? Believers in this double-fat concoction claim:
- Extra Creaminess – Mayo emulsifies better than butter alone, creating a frothier texture.
- Probiotic Potential – Homemade mayo often includes raw egg yolks, which some claim boost gut health.
- Flavor Twist – Advocates insist that the tangy zing of mayo balances the bitterness of coffee in a unique way.
- Shock Value – Let’s be real: part of the attraction is grossing people out. Drinking something that others find revolting is a badge of honor in internet subcultures.
The Cult Mentality Behind Weird Food Trends
Food trends like this don’t just appear, they thrive in online spaces where community, shock, and identity overlap. People who drink butter-and-mayo coffee often see themselves as rebels against mainstream dietary advice. They view themselves as pioneers, bravely venturing into the culinary unknown. Just like the raw-meat eaters of TikTok or the people who swear by onion water for colds, the mayo-coffee cult has its own hashtags, in-jokes, and defenders. The more outsiders gag and call it gross, the more insiders dig in and defend their strange ritual.
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While butter coffee has some scientific backing in terms of keto-friendly energy and fat digestion, mayonnaise doesn’t bring much to the table scientifically. It’s essentially oil and eggs. While eggs contain nutrients and fats, dumping a spoonful of Hellmann’s into your morning coffee isn’t exactly a health breakthrough. However, because mayo contains lecithin, it acts as an emulsifier, blending fats and coffee into a smoother drink. So technically, the coffee-mayo cult stumbled onto a food science trick, even if it wasn’t intentional.
The Taste Test: What Do People Say?
Here’s a sampling of what people who have tried butter-and-mayo coffee say:
- “I thought it would taste like garbage, but it’s like a latte if you ignore the mental image.”
- “The mayo adds a weird tang that actually grows on you.”
- “My girlfriend almost broke up with me when she saw me make it.”
- “It’s smooth, it’s rich, and it’s disgusting, but I can’t stop drinking it.”
The Ritual: How to Make Butter-and-Mayo Coffee
Like any cult practice, there’s a ritualistic process. Followers insist it must be made in a specific way:
- Brew strong, black coffee (the darker, the better).
- Add one tablespoon of grass-fed butter.
- Add one tablespoon of mayonnaise (preferably homemade).
- Blend with a frother until creamy and frothy.
- Sip while questioning your life choices.
Some even add MCT oil, cinnamon, or a drop of vanilla to make the concoction more palatable. There’s even a Facebook group dedicated to recipe variations.
The Social Media Explosion
What really turned this trend into a cult was social media. Videos of people trying mayo coffee for the first time get millions of views. Reaction channels thrive on the disgust factor. On TikTok, hashtags like #MayoLatte and #ButterMayoCoffee have racked up views in the tens of millions. The combination of shock, curiosity, and comedy made it irresistible.
The Psychology of Gross-Out Health Hacks
Why do people flock to disgusting-sounding food trends? Psychologists argue it’s about:
- Identity Signaling – Drinking mayo coffee says, “I’m different. I’m hardcore.”
- Community Belonging – Belonging to a small group with a weird ritual creates strong bonds.
- Curiosity and Daring – Humans are wired to test boundaries, even culinary ones.
- Internet Clout – Nothing gets clicks like eating or drinking something gross on camera.

What Doctors Think
Nutritionists and doctors, unsurprisingly, aren’t fans. Most say there’s no real benefit, and it could actually be harmful if consumed daily, due to excessive saturated fat and cholesterol. Dr. Sandra Michaels, a dietician, was quoted in one interview: “If your goal is a heart attack in a cup, this drink is for you.” Yet, some experts note that occasional indulgence probably won’t kill you, though your taste buds may never forgive you.
Could It Go Mainstream?
We’ve seen weirder things go mainstream. Remember kombucha? Once considered “rotten tea,” now it’s sold at every supermarket. Could butter-and-mayo coffee follow the same path? Some enthusiasts think so, imagining artisanal cafes selling “Fat Brews” topped with mayo foam. Skeptics laugh it off, predicting it will fade into meme history. But the fact that we’re even talking about it shows how easily bizarre trends can grip the collective imagination.
The Cult Grows in Silence
The strangest part is how secretive many followers are. Some people admit to drinking butter-and-mayo coffee but only behind closed doors, afraid of judgment. One Reddit user confessed: “I drink it every morning, but I can’t tell my family. They’d think I’m insane.” Like any cult, there’s a sense of secrecy and shame mixed with devotion.
Madness or Genius?
At the end of the day, butter-and-mayo coffee might just be the perfect symbol of internet culture: bizarre, polarizing, and strangely captivating. It’s not about taste, health, or logic, it’s about community, rebellion, and the thrill of doing something weird. Whether this trend dies in a few months or becomes the next kombucha, one thing’s for sure: the cult of coffee with butter and mayonnaise will go down in history as one of the craziest beverage fads ever.
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