🅢 = Story: Robusta Changing Minds

The more time I’ve spent in coffee, traveling, tasting, and building Fat Miilk, the more I realized that so much of what we think we know about coffee is shaped by narrative, not necessarily by truth.

In Vietnam, Robusta isn’t an afterthought. It’s the backbone of the coffee industry and the flavor profile millions of people grew up with. We’ve always believed Robusta deserves a different conversation, one that focuses on quality, sourcing, and craft. Because when you treat Robusta with the same care and intention given to any great coffee, it can surprise even the most seasoned professionals.

That’s something our team gets to explore every day behind the bar and in the lab.

Kim, our Head of Quality and Sourcing, has spent years experimenting with brewing methods and extraction to understand what Robusta is truly capable of. Her journey, like many of ours, started with the same assumptions the industry has repeated for decades.

But one cup can change a lot of minds.

— Lan Ho, Founder of Fat Miilk

🅘 = Insight: Brewing Beyond the Bias

At Fat Miilk, we roast to order, which gives us an intimate understanding of the beans and the process. With 10+ years in the specialty coffee industry, working in quality control, sourcing, sample roasting, and now production, I’ve never been more excited to share what we’re discovering with Robusta.— Kim Nguyen, Head of Coffee Quality and Sourcing

Brewing coffee seems like such a simple concept. Pour hot water over ground coffee—easy, right? In my early barista days, I didn’t think twice about extraction or how grind size, water temperature, or coffee variety affected my brews. I simply followed whatever recipe I was given. But brewing coffee is so much more than grinding beans and pushing a button. The method matters. And so does the bean.

“Robusta is too bitter.”

This was something I heard constantly from coffee professionals as my career progressed. At the time, Robusta wasn’t really part of the specialty coffee conversation. Thankfully, my role in a QC lab allowed me to sample Robusta from Vietnam, no small feat considering I worked for a company that exclusively sourced Arabica.

I remember my supervisor had essentially written Robusta off as “inferior in quality.” One day, I brewed him a cup of an anaerobic processed coffee from Vietnam without telling him what it was. He commented on its great flavor and depth, then asked what he was drinking. When I told him it was Robusta, he was shocked. We approved a few bags for purchase later that same day.

The Robusta I presented had a winey sweetness and bright acidity without being sour. The brew method was simple: full immersion from a cupping. No pour-over, no filter, just coffee grounds steeping in hot water and continuing to extract in the cup. What stood out was how this Robusta continued to extract without becoming overly bitter. Changing his perception in that moment was incredibly satisfying.

That experience pushed me to keep highlighting the underdog of the coffee industry: Robusta from Vietnam.

“Robusta lacks complexity.”

After dialing in Robusta through many brewing methods throughout my journey, I’ve learned that Robusta is especially soluble. That solubility makes it incredibly versatile. It can present as full-bodied and sweet with chocolate notes, or lighter in body while still maintaining sweetness and gentle acidity.

The old opinion that Robusta lacks complexity has thankfully started to shift. Brewing methods, and even subtle changes in brew ratios, can reveal entirely different sides of the same coffee.

When I teach my phin brewing classes, I often demonstrate a few different brewing methods using the same Robusta to highlight these nuances. With phin brewing, I like widening the ratio so the cup is lighter and easier to drink in the morning—less heavy on the stomach. With cupping, I point out the fullness and sweetness. And with espresso, the sweetness intensifies due to the tighter water-to-coffee ratio and faster extraction.

Whatever the method, brewing Robusta is anything but simple. Each experiment brings new knowledge and new expressions in the cup. I plan to keep experimenting, tasting, and sharing what I learn to help break down the barriers that have long surrounded the Canephora species.

🅟 = Pulse: Extraction is Reframing Robusta

Across the specialty coffee industry, Robusta is being revisited through the lens of brewing science and extraction. Because Robusta has higher solubility than Arabica, coffee professionals are studying how different brew methods (immersion, pressure-based espresso, and traditional brewing techniques) shape sweetness, body, and bitterness in the cup.

With Robusta extracting more readily, small adjustments to brew ratio, contact time, and pressure can significantly change how the coffee presents. This has led baristas, roasters, and researchers to rethink how Robusta should be brewed rather than evaluating it through the same parameters historically used for Arabica.

For example, immersion methods such as cupping or steeping often highlight Robusta’s chocolate sweetness and fuller body, while espresso extraction tends to amplify its syrupy texture and bold structure. These brewing approaches are helping professionals better understand how to balance Robusta’s natural intensity while bringing forward its sweetness and complexity.

As experimentation continues across labs and cafés, Robusta is increasingly being seen not simply as a different species of coffee, but as one that benefits from a different approach to extraction to reveal its full potential.