Showing posts with label coffee fermentation. Show all posts
Showing posts with label coffee fermentation. Show all posts

Sunday, March 8, 2026

What Is Golden Honey Process Coffee? Specialty Coffee Processing Explained (White, Yellow, Red & Black Honey)

 Just recently, while attending a coffee tasting event—what we often call a “coffee cupping banquet”—I happened to hear the term “Golden Honey Process.” Most of us are already familiar with names like White Honey, Yellow Honey, Red Honey, and Black Honey when it comes to coffee processing methods. But what exactly is Golden Honey?

For a moment, it made me reflect on how new terminology constantly appears in certain industries today. These new terms often make people both curious and cautious. Are they the result of genuine technological innovation, or simply clever marketing? It struck me that this phenomenon is actually worth discussing within the specialty coffee world. So today, I’d like to share some of my observations and thoughts—and of course, feel free to join the conversation in the comments.

The charm of specialty coffee lies in its spirit of innovation and continuous learning. To some extent, the appearance of new professional terms and vocabulary in the industry is a good thing. After all, it means people are trying new ideas. These terms are often the result of both technical experimentation and marketing needs working together. That said, we should also approach them with a certain level of critical awareness rather than accepting everything at face value. My reflections today are simply based on this personal experience, and coffee processing methods are far from the only area where new terminology keeps emerging.

At its core, coffee processing is fundamentally about fermentation. During this stage, there are countless variables involved—temperature, humidity, time, microorganisms, shade, stirring frequency, and more. A farm or processing station might make subtle adjustments to traditional methods such as honey processing or anaerobic fermentation. For example, they might change the duration of anaerobic stages, alter the percentage of mucilage left on the beans, or modify the materials used in drying beds. In order to distinguish these slight variations from standard terminology, producers sometimes give the process a more specific and appealing name.

The coffee I encountered at the event was a Geisha from Costa Rica’s Finca La Bandera, processed using what they call the Golden Honey method. However, it’s important to understand that “Golden Honey” is not a globally standardized processing term. Instead, it is more of a marketing-level name proposed by a particular farm, processing mill, or green coffee trader. To truly understand what this means, we need to briefly revisit what honey processing itself actually is—and what the color labels added before the term represent.

Honey processing is a method that sits somewhere between natural (dry) processing and washed processing. The key step involves removing the outer skin and pulp of the coffee cherry while leaving some of the sticky, sugar-rich mucilage attached to the bean. The beans are then fermented and dried with this mucilage still present.

Different honey processes are categorized based on how much mucilage is retained and how the beans are dried:

  • White Honey: Most of the mucilage is removed. Drying happens quickly, and the flavor profile is closest to washed coffee—clean and bright with crisp acidity.

  • Yellow Honey: Some mucilage is retained. Beans are dried in the sun and turned regularly, producing moderate sweetness and body.

  • Red Honey: More mucilage remains. Drying occurs slowly under shade or reduced sunlight, with less frequent turning, resulting in stronger sweetness, fuller body, and more noticeable fermentation notes.

  • Black Honey: Nearly all mucilage is left on the beans. Drying happens extremely slowly under heavy shade with minimal turning. This produces the most intense flavors and body, often with dark fruit and spice notes—but it also carries the highest risk during processing.

So where does Golden Honey fit in?

In terms of technique, it can be understood as a finely calibrated point somewhere between Yellow Honey and Red Honey. Essentially, the farm has chosen to define what they consider an “ideal balance” within that range and has given it a distinctive name. By creating a new term within a familiar framework, producers can communicate the idea that their process represents a more refined and carefully controlled version of honey processing. In other words, they are signaling to consumers that this coffee is crafted using more meticulous techniques to achieve a particularly clean, sweet, and high-quality cup.

Golden Honey typically implies a more elegant sweetness and a cleaner fermentation profile, aiming to locate a superior or distinctive flavor point within the traditional honey-processing spectrum. At the moment, the term is almost exclusively associated with Finca La Bandera in Costa Rica. When people mention Golden Honey, they are very likely referring to beans from this particular farm.

Interestingly, I’ve also seen producers in Yunnan, China use terms such as “Golden Robe Honey Process,” which functions in a similar way. These names are essentially designed to create memorable branding and differentiation. In today’s highly competitive specialty coffee market, terms like natural, washed, and honey processing have already become basic vocabulary. When a new and distinctive name appears, it can instantly capture consumers’ attention and help a coffee stand out during green bean auctions or retail sales.

Of course, we can reasonably assume that a process like Golden Honey probably does involve more refined control within the existing honey-processing framework. For instance, the producer may aim to keep the mucilage at a precise “sweet spot,” implement strict drying management, and use slower drying at lower temperatures to prevent overly rapid sugar fermentation that could produce harsh acidity. The goal would be to develop a cleaner, more structured sweetness.

There may also be greater attention to even drying, including careful timing and frequency when turning the beans.

From a consumer’s perspective, however, it’s important to maintain a stable framework of knowledge. With solid fundamentals in mind, we can better evaluate any new terms that appear in the market. This helps prevent us from falling into certain consumerism traps. While innovation can certainly spark curiosity and encourage exploration, new terminology can also confuse consumers, making it difficult to determine whether something represents real innovation or simply old wine in a new bottle.

When tasting coffee, we should always remember that the most reliable judge is our own palate. When encountering a new term like “Golden Honey,” we can ask ourselves:

  • Does this coffee truly taste different from other honey-processed coffees I’ve had?

  • Is its sweetness, acidity, body, or clarity genuinely distinctive?

On the one hand, we should recognize that the industry is evolving rapidly and welcome innovation supported by transparent information. Such innovation reflects progress in coffee farming and provides new ways to communicate flavor experiences. On the other hand, we should remain cautious of names that are overly poetic, difficult to trace, or unwilling to explain their processing details. True innovators are usually happy to share the specifics of their techniques because they want people to appreciate and spread the value of their work.

After all, the definition of Golden Honey can vary from farm to farm, and there is no absolute standard. What we can develop instead is our own standard: no matter how beautiful the name sounds, let the flavor in the cup be the final judge. There’s no need to mythologize the terminology—always trust your taste buds to verify the most authentic experience.

Sunday, January 18, 2026

From Washed to Co-Fermentation: How Colombian Coffee Processing Is Redefining Flavor

 When we talk about Colombia as a coffee-producing country, if this conversation had happened a decade or more ago, the first thing that would likely come to mind is water. Thanks to its abundant water resources, Colombia traditionally relied heavily on washed processing methods. For many coffee lovers who were once captivated by the bright, elegant acidity of classic Colombian washed coffees, Colombia left a lasting and positive impression. In traditional espresso blends, Colombian washed coffees also played a crucial role in providing balance and cleanliness of flavor.

Yet somehow, at an uncertain point in time, the image of Colombia began to shift. Today, when people mention Colombian coffee, what often comes to mind is a dazzling array of so-called innovative processing methods—especially eye-catching co-fermentations. At one point, simply hearing “Colombia” made people instinctively ask: What process is it? Is it another bold experiment? What exactly happened behind this dramatic shift in reputation? Today, let’s talk about the development history of Colombia’s so-called “extreme processing.”

Colombia’s golden era was undeniably brilliant. So much so that its authoritative coffee institutions standardized quality and published strict processing guidelines. The label “100% Colombian” carried real weight—those who know, know. Coffees that were both intensely flavorful and remarkably clean felt like a reflection of Colombia itself: passionate, vibrant, and deeply intoxicating.

However, as the global coffee market has evolved in recent years, consumer preferences have become far more diverse. Many drinkers are now searching for entirely new flavors and sensory experiences in coffee. To some extent, this shift has pushed pressure back onto producers, encouraging them to seek out methods that can deliver more striking and memorable flavors.

After looking into relevant materials, I believe there is a very direct reason behind Colombia’s transformation. Over the past several decades, traditional washed coffee has often failed to cover rising production costs. For many farming families, growing and processing coffee alone did not lift them out of poverty. As a result, they were compelled to seek breakthroughs in processing methods—exploring new flavor possibilities that could justify more sustainable and meaningful prices.

It’s worth noting that while washed coffee still remains the core of Colombia’s exports, over the past five years Colombia has become widely known for producing co-fermented and other experimental processed coffees.

In an era of fierce global competition and rising costs, Colombia—long regarded as a pillar of the coffee world—has its core markets in Europe and Asia. Consumers in these regions increasingly value intensity of flavor, aromatic richness, and striking floral or fruity profiles. Co-fermentation seems almost tailor-made to satisfy these preferences.

That said, I still believe that no matter how astonishing the flavors produced by these special processes may be, they cannot fully replace or surpass coffees made with traditional methods. On a global scale, experimental lots remain a niche market. However, their premium potential is significant, which explains why more and more producers are willing to invest in special processing techniques.

Colombia is also home to over 560,000 smallholder coffee farmers and boasts one of the most developed agricultural extension systems in the world. Its infrastructure is relatively strong. Once a small number of producers begin experimenting with fruit-added co-fermentation or the use of specific yeast cultures, others tend to follow quickly. The speed at which these practices spread is remarkable.

Moreover, today’s coffee producers in Colombia are largely from a younger generation. Many are well-educated and possess a deeper understanding of specialty coffee and market demand. Their thinking often breaks away from traditional constraints, allowing them to embrace experimentation more openly.

Colombia’s evolution in coffee processing reflects not only a breakthrough amid market opportunities and challenges, but also an attempt to improve livelihoods and economic conditions. Regardless of how many forces and motivations lie behind it, we must acknowledge that innovations such as fermenting with fruit pulp, grape must (mosto), or controlled microbial cultures have, at least conceptually, challenged our definition of “quality.”

The debate around flavored coffees and infused beans may never truly be resolved. Perhaps they are both destined to exist as “rebels”—forever unwelcome among purists who remain loyal to traditional processing methods.

Beyond that, the National Federation of Coffee Growers of Colombia (FNC), the very institution that once defined the quality standards of “100% Colombian” coffee, now finds itself at a crossroads. Historically, it served as a guardian of Colombia’s coffee identity, protecting traditional standards. But given today’s domestic industry landscape and the emergence of new processing methods, it may need to accept a broader, more diverse, and less predictable definition of Colombian coffee.

As long as processing methods are fully transparent and clearly communicated to consumers, expanding the diversity of Colombian coffee holds enormous potential.

On the other hand, experimentation with co-fermentation and other special processes demands extremely high levels of variable control. Innovation often comes with significant losses, repeated restarts, and heavy investments of time and resources—costs that not everyone can afford. Additionally, green coffee from these special processes tends to be expensive. While cafés can showcase a wider range of flavors and processing styles on their menus, consumers must also pay more for these novelty-driven experiences.

Furthermore, special processing does not guarantee consistency. Compared to traditional methods, these coffees carry a higher degree of instability from batch to batch. This instability is likely one of the key reasons why such methods have never truly displaced traditional processing at the core of the industry.

For Colombia, the current strategy remains clear: traditional washed coffee continues to anchor its foundation. After all, it is still Colombia’s national coffee calling card—central to its identity and the backbone of its industry. On top of this foundation, Colombia creates space and legitimacy for innovation. This approach gives Colombian producers far greater flexibility and adaptability in green coffee processing than many other countries.

Colombia can no longer be summed up by a simple phrase like “bright and clean washed coffee.” Colombia has rewritten the rules of Colombian coffee.

Monday, January 5, 2026

Gold Washed Coffee Explained: What Is Gold Washed Processing & Why It Tastes So Sweet

 When shopping for coffee, you may have come across a processing method labeled “Gold Washed.” We’re all familiar with one of the classic processing methods—washed—but what does the addition of gold actually mean? How is it different from traditional washed coffee? Today, I’d like to dedicate this article to exploring exactly what the Gold Washed process is.

I wanted to write this piece because I recently encountered an outstanding roaster from Kyoto at a coffee festival. They were showcasing a Red Bourbon from the Popayán region of Cauca, Colombia, processed using the Gold Washed method. That coffee left a deep impression on me—it was simply too good. Naturally, it sparked my curiosity to dig deeper into this processing style. (I’ll be sharing a full tasting review of that coffee later. I couldn’t resist and ordered two bags on the spot—no hesitation at all.)

When it comes to “Gold Washed,” there is a certain degree of producer-specific ownership to the method. By that, I mean that while the process can be learned and replicated, most of the Gold Washed coffees currently available on the market come from Santuario Project. Santuario is a professional coffee producer and exporter with farms and processing facilities in Colombia, Costa Rica, Brazil, Mexico, Ethiopia, and El Salvador.

In this article, we’ll focus on two things:

  1. The overall workflow of the Gold Washed process

  2. The specific advantages it brings to flavor expression

In simple terms, Gold Washed combines the strengths of both washed and natural processing. It does not strictly belong to the traditional washed category. Instead, it can be seen as a more refined, upgraded version of washed processing. The core goal is to retain the clean, bright flavor profile of washed coffees while introducing the enhanced sweetness, fruit complexity, and body commonly found in natural processing—through carefully controlled fermentation.

To better understand this, let’s compare it step by step with the traditional washed process.

The initial steps are exactly the same. First comes harvesting and flotation: only fully ripe red cherries are picked, then placed in water tanks to remove floaters, defects, and debris. Next, a depulping machine removes the outer skin and most of the fruit flesh. At this stage, the coffee beans are still coated in a sticky layer of mucilage.

Up to this point, the process is identical to traditional washed coffee. The key difference begins during the mucilage fermentation stage. In a classic washed process, mucilage-covered beans are submerged in water for underwater fermentation, typically lasting 12–36 hours. After fermentation, the mucilage is completely washed away with large amounts of clean water, followed by drying.

Gold Washed processing takes a different approach. Instead of fermenting underwater, the beans—still coated with mucilage—are placed in a dry or semi-dry environment (without full water immersion) for a longer, tightly controlled dry fermentation, which may last several days. During this time, temperature, pH levels, and humidity are closely monitored.

The reason for this method is to allow microorganisms—such as yeasts and bacteria—to interact more deeply with the mucilage, producing more complex sugars and flavor compounds. At the same time, the beans are not in contact with the full fruit mass as in natural processing, making the process more controllable and consistent in quality. This is a critical distinction: traditional washed processing prioritizes efficiency and cleanliness, often washing away much of the fermentation-driven flavor potential. Gold Washed coffees, on the other hand, manage to preserve the cleanliness of washed coffees while capturing the sweetness and expressive character typically associated with naturals.

Next comes the drying stage. In traditional washed processing, fully washed parchment coffee (still wrapped in its inner skin) is dried on patios or in mechanical dryers until moisture content reaches around 11–12%. With Gold Washed, after fermentation reaches its intended endpoint, the beans may be lightly rinsed with water, but not thoroughly washed as in traditional methods, before moving on to drying. (Perhaps this brief contact with water is why it still carries the “washed” name—just a thought.)

This gentle rinse is more important than it might sound. Its purpose is to halt fermentation, preventing over-fermentation and ensuring flavor balance in the final cup.

Because of the extended and carefully managed fermentation, Gold Washed coffees tend to develop higher sugar content, resulting in a pronounced sweetness. At the same time, they retain the hallmark bright acidity of washed coffees—often reminiscent of citrus, lemon, or green apple. The overall flavor profile is clean and well-defined, yet layered with notes of stone fruits (such as peach or apricot), berries, and sometimes even subtle tropical fruit nuances. The mouthfeel is rounder and smoother. (Honestly, I found almost all of these characteristics in the coffee I tasted—and it was incredibly satisfying.)

I really enjoy sharing these less common but thoughtfully designed processing innovations—methods that push boundaries without resorting to extreme or gimmicky techniques. Gold Washed is a great example of a modern processing approach that uses precise fermentation control to optimize flavor. It doesn’t aim to overthrow tradition, but rather to refine it.

If you appreciate the cleanliness of washed coffee but wish for more sweetness and fruit complexity, then the next time you see a coffee labeled Gold Washed, don’t hesitate. It’s absolutely worth trying.

Saturday, December 13, 2025

Co-Fermentation vs Yeast Fermentation: What’s the Real Difference in Specialty Coffee?

 In recent years, “flavor-enhancing” coffee processing methods have become one of the most talked-about topics in the industry. As more and more unconventional techniques emerge, it’s easy for concepts to get blurred and definitions to overlap. Clarifying these processing methods can be genuinely helpful when you’re choosing coffee beans in the future—it gives you a more concrete framework and makes it easier to identify the flavor profiles you actually enjoy.

One of the most commonly confused pairs is co-fermentation and yeast fermentation. Some marketing narratives even lump yeast fermentation directly into the category of co-fermentation. In reality, the two should be seen as parallel but distinct approaches. Today, let’s take a closer look at how they differ.

Co-fermentation and yeast fermentation are essentially two major branches within flavor-enhancing coffee processing, covering the vast majority of “boosted flavor” coffees you’ll find on the market. They do share certain similarities. At their core, both aim to amplify the flavor potential already present in the coffee cherry, allowing producers to guide flavor direction and sensory characteristics—and, as a result, often increase the coffee’s economic value.

Put simply, co-fermentation involves adding external organic substrates—such as fresh fruit pulp or fruit juice—during the fermentation process. Yeast fermentation, on the other hand, deliberately introduces specific yeast strains into fermentation to create distinctive flavor profiles.

Because of this, you’ll notice that both methods rely on external organic materials and compounds to produce flavors that terroir alone might not create. Yet there is a fundamental difference between them. A key point lies in co-fermentation methods that add ingredients like passion fruit, orange juice, or lemon juice. These additions don’t actually aid fermentation itself; the coffee beans mainly absorb the flavors of the added fruit. This is why many people view co-fermentation as a form of “flavor cheating.”

Yeast fermentation works differently. Here, specific microorganisms participate throughout the entire fermentation process, still following—and actively engaging in—the essential stages of traditional coffee fermentation. The introduction of targeted yeast strains leads to the formation of new sugars and compounds that generate unique flavors. In this sense, yeast fermentation is closer to a “natural selection” process, involving far less direct human intervention compared to co-fermentation.

At its core, yeast fermentation draws heavily from techniques used in craft beer brewing. Specific yeast strains may be introduced before or during fermentation. A yeast strain is a particular variant within a yeast species, defined by unique genetic traits that influence how it metabolizes sugars and, ultimately, the flavors it produces.

Much like in craft beer or winemaking, this process can be controlled in multiple ways to create a wide range of flavor outcomes. Fermentation is essentially the microbial breakdown of sugars. Even without adding selected strains, fermentation is already a natural part of traditional coffee processing—processing methods, at their heart, are all about managing fermentation well. And even with specific yeasts introduced, the final flavor always retains a degree of unpredictability. It’s precisely this uncertainty that further distinguishes yeast fermentation from co-fermentation.

Co-fermentation, by contrast, introduces new microorganisms and new sugar sources through the addition of fruit juices or pulps. These fruits naturally carry their own microbial populations, which further alter and complicate the fermentation process. At the same time, this approach makes flavor outcomes far more predictable. Most fruits already have strong, recognizable aromas and flavors, and coffee beans inevitably absorb them during fermentation. As a result, you’ll often find very clear, unmistakable fruit notes in both dry and wet aroma.

From my own brewing experience, a lemon co-fermented coffee is a perfect example. No matter how you brew it—even brewing blindly—you’ll almost certainly end up with a pronounced lemon juice flavor. In fact, even after the coffee is gone, the container that held the beans can still retain a lingering lemon aroma.

Both co-fermentation and yeast fermentation currently fall within what the market broadly accepts as legitimate “flavor-enhancing” processing methods. They are fundamentally different from so-called “flavored coffees” made with artificial additives. As consumer awareness grows and supply chains become more transparent, these processes are now far more traceable than in their early days. Green coffee traders and roasters alike typically provide clear documentation of the entire processing method and strive to name these processes in more straightforward, honest terms.

That said, for consumers, these definitions can still feel complex and abstract. A clearer conceptual understanding is essential—not just to know what kind of coffee you’re actually drinking, but to decide whether it’s truly the kind of coffee you want in your cup.