If you have been drinking specialty coffee for a few years, you have probably had the experience of opening a bag of natural process Ethiopian beans and being startled by what came out of the cup. Strawberry. Blueberry. Wild berries. A funky, jammy, almost wine-like quality that does not seem like it should belong in coffee. The first time you taste it, you might assume the roaster flavored the beans somehow. They did not. The fruit notes are real, naturally present in the coffee, and produced entirely by the processing method. Understanding what is happening during the natural process tells you why these flavors exist and changes how you read coffee labels forever.
This is one of those moments where the science behind coffee starts to feel a little magical. The same plant, the same variety, processed differently, produces a wildly different cup. Once you understand the mechanism, the flavor differences make complete sense and the world of processing styles opens up. Explore our most popular coffees here and natural process coffees become a different category of experience once you know what to look for.
The fruit you taste is not added. It is the cherry's own contribution to the cup, captured during processing in a way that other methods do not allow.
The Three Main Processing Methods
There are three primary ways coffee cherries can be processed after harvest, and each produces a different flavor profile in the resulting beans.
The washed process, sometimes called wet process, is the most common in specialty coffee. The cherries are pulped to remove the outer skin and most of the fruit pulp, then the beans are soaked in water tanks to ferment for a period that removes the remaining mucilage. After fermentation, the beans are washed clean, then dried. The result is a cup that emphasizes the bean's intrinsic flavor, with clean acidity, defined sweetness, and clarity. Washed coffees taste like the variety and origin without much interference.
The natural process, also called dry process, is the older method and is still used in regions where water is scarce. The cherries are picked and then dried whole, with the fruit still surrounding the bean. They are spread out on patios or raised beds and turned regularly while they dry over several weeks. Only after the cherry has fully dried is the dried fruit hulled away to reveal the beans inside. This method produces the fruit-forward, funky, wild flavors that natural process coffees are known for.
The honey process is a middle ground. The cherries are pulped to remove the outer skin, but some or all of the sticky mucilage is left on the beans during drying. The beans dry with this layer of fruit sugar coating them, which contributes sweetness and body without producing the same intensity of fruit flavor as a full natural. Honey processes are named by color, from white honey (almost no mucilage left) to black honey (most or all of the mucilage left), with yellow and red honey in between.
Each method has its own characteristics and the choice often depends on the region, climate, water availability, and what the roaster is trying to achieve.
What Actually Happens During Natural Processing
The natural process is essentially a controlled fermentation that happens while the bean is still inside the cherry, drying slowly over weeks. The cherry is full of sugars, acids, enzymes, and yeasts. As it dries, the moisture content drops, but the bean inside is in close contact with all of these compounds throughout the drying period.
Microorganisms, primarily yeasts and certain bacteria, multiply in the drying cherry. They consume the sugars and produce a range of organic compounds. Some of these are alcohols, some are esters, some are organic acids. The esters in particular are the compounds responsible for fruity flavors in many foods. The specific esters produced during natural processing have flavor profiles that humans perceive as berries, tropical fruit, stone fruit, and sometimes wine-like or jammy.
These compounds are absorbed into the bean during the drying period. They migrate through the cherry into the bean's outer layers. By the time the dried cherry is hulled away and the bean is exposed, the bean has been infused with the flavor compounds created during the slow fermentation.
When the bean is then roasted, those compounds survive the heat and end up in the cup. The fruit you taste in a natural process coffee is the chemical signature of the fermentation that happened while the cherry was drying.
Why The Process Is Hard To Control
Natural processing is much harder to do well than washed processing. The drying period is long. The bean and cherry are exposed to ambient conditions for weeks. If anything goes wrong during the drying, the entire lot can develop off-flavors or even spoil.
Common problems include excessive moisture during drying, which leads to mold or rot. Uneven drying, where some cherries dry faster than others, leads to inconsistent fermentation across the lot. Excessive heat can stop the fermentation prematurely, leaving flat, hay-like flavors instead of the desired fruit notes. Poor air circulation can encourage the wrong microorganisms to dominate, producing musty or vinegary flavors.
The producers who do natural processing well are watching the cherries constantly. They turn them regularly. They cover them when it rains or when the sun is too intense. They monitor moisture levels and adjust as needed. Skilled natural processing is a slow, attentive craft. The good results reflect that attention.
This is also why high-quality natural process coffees often cost more than equivalent washed coffees. The labor involved is significant. The risk of losing the entire lot to bad weather or processing errors is real. The producers who deliver consistent quality natural process coffee deserve the premium.
Why The Flavors Are So Distinctive
The reason natural process coffees taste so different from washed coffees is that the chemical compounds produced during the fermentation are largely absent from the washed version of the same beans. Washed processing removes the fruit and mucilage quickly, so the long fermentation that produces fruit compounds never has a chance to occur. The bean retains its intrinsic flavor but does not pick up the fermented fruit signature.
The specific notes you taste in a natural depend on the bean's variety, the region's microorganisms, and the conditions during drying. Ethiopian naturals tend toward berries and tropical fruits because of the local yeasts and fruit profiles. Brazilian naturals tend toward heavier, more chocolate-dipped fruit notes because of different processing approaches and climate. Yemeni naturals often have a wild, almost wine-like character that is uniquely their own.
The flavor signature also evolves with the roast level. Lighter roasts preserve more of the fruit compounds and let the natural process character come through clearly. Darker roasts can burn off some of the more delicate fruit notes and produce a different but still distinctive cup. Most specialty roasters who feature natural process coffees roast them on the lighter side to preserve the fruit character that makes them special.
Check out our most popular roasts here and natural process coffees become easier to find and easier to appreciate when you understand what produced them.
The Funky Side Of Natural Processing
Not everyone loves natural process coffees. The fruit-forward, wild, sometimes funky character can be polarizing. People raised on washed coffees with their clean acidity and clarity sometimes find naturals to be too much. The wine-like notes can be perceived as too unusual or off-putting if you are not expecting them.
This is fine. Naturals are not for everyone, and there is no obligation to develop a taste for them. They are a specific style of coffee that some drinkers love and others prefer to avoid.
The funky character also exists on a spectrum. Some naturals are subtle, with just a hint of berry sweetness layered into an otherwise familiar cup. Others are dramatic, with intense tropical fruit, jammy sweetness, and pronounced fermentation notes that take over the cup. If you are exploring the category, starting with the subtler examples is a good way to learn what natural processing tastes like before working up to the more extreme expressions.
The wildest naturals can also be slightly polarizing because they push toward the edge of what coffee can do. The flavors of overripe fruit, wine, and even slight overfermentation can feel like the coffee has gone too far in some cases. Different drinkers have different thresholds for where the line is. Calibrating your own taste takes time.
The Bigger Lesson About Processing
The natural process story illustrates a broader lesson about coffee. The bean is the starting material, but everything that happens between the cherry and the cup affects what you end up drinking. The variety matters. The growing conditions matter. The processing matters enormously. The roasting matters. The brewing matters. Each step is a layer that can either reveal or obscure what the original coffee had to offer.
Drinkers who have only had washed coffees often assume that "real" coffee tastes the way washed coffee tastes. Drinkers who have only had darker roasts assume the same about their preferred style. The reality is that coffee has a much wider range of possible expressions than any single drinker's experience would suggest. Trying a natural process coffee for the first time is one of those moments that expands the range of what coffee can be.
This is also part of why coffee continues to be interesting after years of drinking it. There are always new processing styles being explored, new varieties being developed, new regions producing coffee in their own way. The variable that produced fruit notes through natural processing is one of many that roasters and producers are continuing to play with.
The next time you see "natural process" on a bag of coffee, you will know what to expect and why. The fruit is real. The mechanism is fermentation. The skill of the producer is what determines whether the cup is excellent or disastrous. Pay attention and the bag becomes more than a label. It becomes a record of what happened to that coffee on its way to you.
All images shown in this blog are sourced from pexels.com.