Stand with us on our farm in Holualoa on any given morning, and you will understand something that no textbook can fully capture. The air carries a particular coolness that lingers from the night before. Down the slope, the Pacific stretches out in a wide, glittering band. And right on schedule, the first wisps of cloud begin to curl up from the ocean below, climbing the flanks of Mauna Loa the way they have done every single morning since long before anyone planted a coffee tree here. By noon, those clouds will wrap the farm in a soft, diffused light. By mid-afternoon, a brief shower will move through. And by sunset, the sky will open up again into something that stops visitors mid-sentence.
This is not just scenery. This is agriculture. Every element of that daily weather choreography shapes the coffee cherry hanging on the branch beside you, the mamaki leaf unfurling a few rows over, and ultimately every cup that leaves our farm. The concept at the heart of all of it is micro-climate, and it is the most important factor that most coffee drinkers have never thought about.
The Big Island of Hawaii is one of the most climatically diverse places on Earth. No two acres here taste the same, and that is not poetic license. It is a measurable, documented, scientifically supported reality. The micro-climates of the Big Island are the reason Kona coffee is distinct from Ka'u coffee, the reason our farm in Holualoa produces a cup that differs from a farm a mile up the slope, and the reason Hawaiian coffee continues to earn recognition as some of the finest in the world. We want to take you through exactly how that works, from the geological forces that created these conditions to the daily farming decisions we make in response to them. If you have ever wondered why Kona coffee tastes the way it does, the answer begins here, with the land, the clouds, and the volcano beneath our feet. This applies not only to our coffee but also to everything we grow alongside it, including the mamaki tea that thrives in the same volcanic soil under the same afternoon clouds. Understanding the volcanic growing region in Kona is the first step toward understanding what makes this place genuinely irreplaceable.
What Is a Micro-Climate, and Why Does It Matter on the Big Island?
Defining Micro-Climates in Agricultural Terms
A micro-climate is a localized set of atmospheric conditions that differ meaningfully from the surrounding regional climate. When meteorologists talk about the climate of Hawaii, they are speaking in broad strokes: tropical, warm, humid, subject to trade winds. But that regional picture tells a farmer almost nothing useful about what is happening on a specific hillside at 1,400 feet above sea level on the western slope of Mauna Loa at 7:00 in the morning in October. That is where micro-climate comes in.
Micro-climates are defined by variations in temperature, humidity, wind exposure, solar radiation, and precipitation at a hyper-local scale. A single ridge, a single tree line, a single variation in slope angle can be enough to create a meaningfully different growing environment within the space of a few hundred feet. For agricultural crops, particularly those as climate-sensitive as coffee, these differences translate directly into differences in plant health, cherry development, bean density, and ultimately cup flavor. Research consistently confirms that slight changes in elevation and weather produce subtle but measurable variations in taste on Big Island slopes. That is not marketing language. It is agronomy.
The Big Island of Hawaii makes this phenomenon unusually vivid because of a single extraordinary geographic fact: eleven of the world's thirteen recognized climate zones exist on this one island. Eleven. From tropical rainforest to alpine tundra, from coastal desert to humid subtropical, all of them exist within a landmass roughly the size of Connecticut. That diversity is not random. It is the product of two massive shield volcanoes, a consistent set of trade wind patterns, an enormous range of elevations, and a position in the central Pacific that exposes every face of the island to different atmospheric conditions. For a coffee farmer, this is both an extraordinary opportunity and a constant source of complexity. Every parcel of land here has its own personality, its own rhythm, its own specific relationship with water, sunlight, temperature, and wind.
The science of coffee agronomy makes clear that this kind of environmental sensitivity matters enormously at the crop level. Coffee plants are not simply tolerant of climate variability. They are acutely responsive to it. The difference between a spectacular growing year and a mediocre one on our farm can come down to a few degrees of nighttime temperature, a slightly different distribution of afternoon cloud cover, or a shift in the timing of our seasonal rains. Understanding those signals and responding to them is what farming in a micro-climate actually means in practice.
The Big Island's Geographic Diversity as a Climate Engine
To understand the Big Island's micro-climates, you need to understand the physical forces generating them. Mauna Kea and Mauna Loa are not simply mountains. They are weather machines. Rising to 13,796 feet and 13,679 feet above sea level respectively, these two volcanic peaks intercept the Northeast Trade Winds that sweep across the central Pacific and force them upward. As the trade winds rise, they cool. Cool air cannot hold as much moisture as warm air, so that moisture condenses and falls as rain. The result is that the windward, northeastern face of the island receives extraordinarily high rainfall, sometimes exceeding 200 inches per year in certain areas. The Hilo side of the island is famously lush and wet for exactly this reason.
The leeward, western and southwestern face of the island sits in what is called an orographic rain shadow. The trade winds have already dropped most of their moisture by the time they descend on the Kona and Ka'u coasts. The result is a drier, sunnier climate at the regional level. But here is what makes Kona uniquely special: the leeward position does not mean dry or harsh. It means that the dominant moisture delivery mechanism is not trade wind rainfall but rather a localized convective pattern. The land heats up during the morning hours, draws moisture up from the ocean below, and generates afternoon clouds and brief showers that move through the coffee belt almost daily. It is a self-contained weather system, intimate and predictable in a way that large-scale trade wind rainfall patterns are not.
Compare the wet Hamakua coast, the arid Kohala region, the cooler upland Ka'u district, and the sun-soaked Kona belt, and you are comparing radically different agricultural environments, all within an hour or two of driving from each other. Hawaii has long held the distinction as the leading U.S. coffee-producing state, and micro-climate diversity is a central reason why the coffee grown here reaches a level of complexity that domestic production elsewhere has not yet matched. Understanding the altitude for growing Kona coffee is inseparable from understanding how these large-scale geographic forces translate into the precise growing conditions on any given farm.
Why Coffee Is Uniquely Sensitive to Micro-Climatic Variation
Coffee is grown commercially within a band that stretches roughly between the Tropics of Cancer and Capricorn, a region often called the coffee belt. Within that band, the most prized growing conditions share a specific set of characteristics: average temperatures between 60 and 70 degrees Fahrenheit, annual rainfall between 60 and 80 inches, good drainage, and either natural shade or cloud cover during the most intense sun hours of the day. These parameters define the conditions under which Coffea arabica, the species that produces the world's finest specialty cups, reaches its full expressive potential.
The challenge is that these ideal conditions rarely exist uniformly across large areas. They exist in pockets. They exist on specific slopes at specific elevations in specific relationships with surrounding topography and vegetation. They are, in other words, micro-climates. This is why the world's most celebrated coffees tend to come from clearly defined, often quite small geographic zones. Ethiopia's Yirgacheffe region, Colombia's Nariño department, Guatemala's Antigua valley, and of course Hawaii's Kona belt are all examples of micro-climate-defined growing areas that have earned their reputations through the specific atmospheric and geological conditions that exist there and not everywhere else around them.
As global coffee production continues to grow, with world output forecast at approximately 189.7 million 60-kilogram bags for the 2026/27 season, the ability to differentiate on quality becomes more important than ever for farmers committed to producing exceptional specialty coffee. Micro-climate farming is not simply a philosophical preference. It is an increasingly critical competitive and economic reality. The Hawaiian soil nutrient properties that contribute to this differentiation are themselves a product of the volcanic micro-climate system, working from the ground up to create something that cannot be replicated elsewhere.
The Kona Belt: A Micro-Climate Engineered by Geology and Weather
Sunlit Mornings, Cloudy Afternoons: The Kona Weather Rhythm
If you spend even one full day on a Kona coffee farm, the weather pattern will inscribe itself in your memory. Mornings here are luminous. The sun rises over Mauna Loa and lights the slope in a clear, warm light that is perfect for the photosynthesis that drives sugar production in the coffee cherry. Bees work the coffee blossoms. The air is cool but not cold. Everything feels precisely calibrated.
Then, beginning around midday, the clouds arrive. They come up from the ocean, as they do every day, and they settle into the coffee belt like a soft blanket. The direct sunlight gives way to a diffused, gentler light. Temperatures drop several degrees. The humidity rises. And for a few hours in the afternoon, the coffee trees are living in conditions that closely mimic those of shade-grown coffee in other parts of the world, except that here the shade is provided not by a planted canopy but by the island's own weather system. A brief shower moves through, delivering moisture efficiently and then clearing. By late afternoon, the clouds begin to lift, and the evening sky opens up into something extraordinary. Those sunsets visible from our elevation in Holualoa are worth experiencing in person, as we note to everyone who visits us for a farm tour. You can read more about the best sunsets seen from Kona coffee farms if you are planning a visit.
This daily rhythm is not simply beautiful. It is functionally perfect for arabica coffee. The morning sun drives photosynthesis and energy accumulation. The afternoon cloud cover prevents the kind of heat stress and water loss that would force the plant to prioritize survival over fruit development. The brief afternoon rain provides consistent moisture at the most beneficial point in the daily cycle. The result is a growing environment that slows down the maturation of the coffee cherry in the most productive possible way. Slower maturation means more time for the cherry to develop complex sugars and organic acids. More complex sugars and acids mean a richer, more layered cup of coffee. Kona's sunlit mornings and cloud-covered afternoons have been recognized for well over a century as the specific climatic mechanism behind the region's extraordinary cup quality. We plan our harvest days, our pruning schedules, and our processing decisions around this predictable rhythm. It is the backbone of everything we do here.
Elevation Bands Within the Kona Belt and How They Differ
Even within the Kona belt, the micro-climate is not uniform. The belt spans a rough elevation range of 800 to 2,200 feet above sea level, and across that range the atmospheric conditions shift in ways that are clearly expressed in the coffee those conditions produce. We think of it in three broad bands, though in practice the transition between them is gradual and continuous.
At the lower elevations, roughly 800 to 1,200 feet, temperatures are warmer and the cloud shadow arrives a little later in the day. Cherry development is faster here, which tends to produce a coffee with a bolder body and a more straightforward flavor profile. The warmth amplifies certain fruit notes and produces a cup that is immediately approachable and satisfying. These coffees have their loyal fans, and there is nothing wrong with them. But they are distinct from what happens higher up the slope.
The mid-elevation band, running from approximately 1,200 to 1,800 feet, is where most specialty coffee farmers on the Kona coast choose to plant, and for good reason. This is the zone where the daily temperature swing between warm days and cool nights is most pronounced. The cloud shadow arrives reliably during peak heat hours. Rainfall is consistent but not excessive. Cherry development is slower and more even, allowing flavors to build gradually. The result is what most people mean when they talk about the classic Kona coffee profile: bright but not sharp acidity, full but not heavy body, sweetness that lingers in the finish, and a smoothness that is immediately distinctive.
Our farm sits in Holualoa, squarely in that mid-elevation sweet spot. When we describe our coffee to visitors and customers, we are describing not just what we do in the processing barn but what the land itself contributes through the specific micro-climate of this hillside. The upper reaches of the belt, from 1,800 to 2,200 feet, produce coffees with cooler overnight temperatures and an even longer maturation window. These lots tend to show more pronounced acidity and sometimes more delicate floral notes, expressions of the extra time the cherry spends on the tree before reaching peak ripeness. For more on how elevation shapes the Kona experience, our detailed look at the best altitude for Kona coffee goes deeper into the specifics. And for context on the geography surrounding all of this, the best volcanic growing region in Kona provides useful grounding.
Volcanic Soil as a Micro-Climate Amplifier
When most people think about micro-climate, they think about weather: temperature, rainfall, cloud cover, wind. But the soil layer is just as much a part of the micro-climate system as the atmosphere above it. In the Kona belt, the soil is primarily young basaltic lava in various stages of weathering, and it functions as a critical amplifier of everything the atmospheric micro-climate provides.
Basaltic volcanic soil has a physical structure that is almost ideally suited to coffee cultivation. It is well-drained, which means that the afternoon rains deliver moisture without waterlogging the root zone. Standing water is one of the fastest routes to root disease in coffee, and the porous structure of lava-derived soil makes that risk minimal here. At the same time, the soil retains enough moisture between rain events to keep the trees adequately hydrated during the dry morning hours when photosynthesis is at its peak. This drainage and retention balance is something that farmers in other parts of the world spend enormous resources trying to engineer artificially through irrigation management and soil amendment. Here, the volcanic geology provides it as a baseline condition.
Beyond its physical structure, the volcanic soil of the Kona belt delivers a mineral nutrient profile that directly influences coffee flavor. Potassium from the basalt supports sugar transport within the plant and contributes to sweetness in the cup. Magnesium is a central component of chlorophyll and supports vigorous photosynthesis. Iron supports enzyme function at multiple stages of cherry development. The volcanic minerals that influence Kona coffee flavor are not simply background conditions. They are active contributors to the complexity of every cup we produce.
This same volcanic soil, with its exceptional drainage, mineral richness, and thermal properties, is also what allows our mamaki tea plants to thrive. Mamaki is a native Hawaiian plant that grows naturally in the volcanic uplands, and it benefits from the same mineral profile that makes our coffee exceptional. The soil is not just a medium for growing things. It is a living part of our farm's micro-climate, one that connects our coffee and our tea through the same geological foundation. The role of volcanic spring water in Kona coffee production extends this mineral story further, as the water that filters through this volcanic rock carries those same mineral signatures into the processing stream.
How Micro-Climate Variables Translate Directly Into Cup Flavor
Temperature Swings and Sugar Development in the Coffee Cherry
The relationship between temperature variation and coffee quality is one of the most well-documented phenomena in specialty coffee science, and it is nowhere more visible than on the slopes of Mauna Loa. The technical term is diurnal temperature variation: the difference in temperature between the warmest part of the day and the coolest part of the night. In the Kona belt's mid-elevation range, this swing can be substantial, with warm afternoons giving way to nights that drop into the low to mid-50s Fahrenheit during winter months.
What does this do to the coffee cherry? It slows everything down. When temperatures drop at night, the metabolic processes within the cherry slow significantly. Sugar transport from the leaves into the fruit becomes more deliberate. The enzymatic reactions that build organic acids and aromatic compounds operate over a longer time window. The cherry stays on the tree for more days or weeks before reaching the same stage of ripeness that a cherry in a warmer, more uniform climate would reach in a shorter period. And all of that additional time is time for complexity to build.
Think of it this way: a cherry that ripens in four months has had four months to accumulate sugars, acids, and aromatic precursors. A cherry that ripens in six months has had six months. The chemical inventory of that slower-ripened cherry is simply richer. When you roast and brew it, more of that complexity survives into the cup. This is the scientific basis for descriptions of pure Kona coffee as producing a cup with a creamy head and a magnificently full body, language that captures a sensory reality rooted in the specific temperature dynamics of this hillside. Coffees from more tropical, lower-elevation growing regions often taste flatter or more one-dimensional by comparison, not because anything is wrong with them, but because the rapid maturation cycle simply does not allow the same depth of flavor development.
The flavors highlighted in Kona coffee are a direct expression of this temperature-driven development process. When you taste that characteristic sweetness, that rounded acidity, and that lingering finish, you are tasting the cumulative effect of months of temperature-modulated ripening in a micro-climate that cannot be reproduced anywhere else.
Rainfall Patterns, Moisture Stress, and Flavor Concentration
Water availability is the other great lever in the micro-climate's effect on coffee quality. The relationship between moisture and bean quality is nuanced: too much water produces large, low-density beans with diluted flavor. Too little water stresses the plant and produces small, underdeveloped beans. The sweet spot is consistent, well-timed moderate moisture that challenges the plant just enough to concentrate flavor compounds in the bean without imposing damaging stress.
The Kona belt's rainfall pattern delivers this sweet spot with remarkable consistency. The dry, clear mornings mean that the coffee tree's surface moisture evaporates quickly, keeping fungal pressure low and allowing the cherry skin to remain intact and clean. The afternoon showers arrive when the soil temperature is high enough to allow rapid absorption and when the tree's transpiration rate is elevated enough that the moisture goes straight to work rather than sitting on the soil surface. The showers are typically brief enough that they do not waterlogg the basaltic soil, which drains quickly in any case. The net effect is a moisture regime that the coffee tree experiences as reliably available but never excessive.
This moisture pattern also shapes our processing decisions in important ways. The dry morning conditions on our farm create windows for sun-drying that are genuinely effective, something that is not reliably possible in higher-rainfall micro-climates. Understanding when sun-dried beans outperform washed beans is partly a function of micro-climate. When the mornings are reliably clear and warm, sun-drying allows the fruit sugars to continue concentrating into the bean even after harvest, adding a layer of sweetness and body that washed processing cannot replicate in the same way. Our on-site fermentation, which you can read about in our discussion of where coffee cherries get fermented on-site, is similarly calibrated to the ambient temperature and humidity of our specific Holualoa location, because those conditions determine exactly how fast fermentation progresses and therefore what flavor character it contributes to the final bean. The volcanic spring water used in our wet processing also carries a mineral character that complements the terroir already present in the bean itself.
Wind, Cloud Cover, and the Role of Natural Shade
One of the less-discussed but genuinely important micro-climate factors in the Kona belt is what does not happen here as much as what does. The Northeast Trade Winds that dominate the weather patterns on the windward side of the Big Island lose much of their force by the time they reach the leeward Kona coast. This means that our coffee trees are not subjected to the constant desiccating effect of persistent wind. In many coffee-growing regions, wind management is a major agricultural concern, requiring windbreaks, specific planting orientations, and ongoing monitoring for wind damage. In the Kona belt, the natural leeward position provides a degree of wind protection that reduces this stress without any intervention from us.
The natural cloud shade that arrives every afternoon in the Kona belt functions as one of the most important micro-climate gifts this location provides. In shade-grown coffee farming, farmers deliberately plant canopy trees above their coffee to filter intense sunlight and moderate temperature. This practice is associated with better cup quality, more complex flavor, and reduced need for chemical inputs because the shade environment supports a more balanced ecosystem. In the Kona belt, the afternoon cloud cover provides many of these same benefits automatically and daily, without requiring a full planted canopy. The diffused light that filters through the cloud layer during peak heat hours is precisely the light intensity that coffee trees use most efficiently.
The combined effect of reduced wind stress, natural cloud shade, consistent moisture, and slow temperature-modulated ripening is a cup profile that is immediately recognizable: low bitterness, smooth body, natural sweetness, and nuanced complexity that rewards slow sipping. These are not marketing claims. They are the sensory outcomes of a specific atmospheric system operating every day on this specific hillside. Our Mokulele Reserve Roast represents our effort to honor and showcase these micro-climate gifts at the highest level, selecting beans that most fully express what this land, this weather, and this soil are capable of producing.
Beyond the Kona Belt: Other Big Island Coffee Micro-Climates
Ka'u: The Southern District's Rising Micro-Climate Story
The Ka'u district sits on the southern flank of Mauna Loa, roughly 30 to 40 miles south of the Kona belt as the crow flies. That distance sounds small, but the micro-climate difference is substantial enough that Ka'u coffee has earned recognition as a genuinely distinct Hawaiian origin, one that now competes seriously at the international specialty coffee level.
Ka'u's micro-climate differs from Kona's in several important ways. The district receives significantly more rainfall, partly because the southern position exposes it to weather systems that bypass the Kona coast, and partly because the topography channels moisture differently. Average temperatures are slightly lower at comparable elevations. The volcanic soil composition, while still basaltic, is in a different stage of weathering in some parts of the district, which influences its mineral profile and drainage characteristics.
What does this mean in the cup? Ka'u coffees tend to show a different character than Kona. Some lots display an earthier, heavier body with more pronounced savory notes. Others show a brighter, sharper acidity than is typical of Kona. The fruit notes can be more tropical and forward in certain harvests, a reflection of the slightly different sugar development curve that the Ka'u micro-climate produces. These are not qualitative judgments. Ka'u coffee is not better or worse than Kona. It is different, in a way that is entirely traceable to the specific atmospheric and geological conditions of the southern district.
The fact that two micro-climates producing such distinctly different coffees exist within 30 to 40 miles of each other on the same island is one of the most compelling demonstrations of how powerful micro-climatic variation can be. If you transported Ka'u's growing conditions to the Kona belt, you would not get Kona coffee. And if you transported Kona's conditions to Ka'u, you would not get the earthy, complex cups that Ka'u is building its reputation around. The land speaks, and each part of the Big Island speaks in its own voice.
Hamakua and the Windward Side: What Abundant Rainfall Does
Turn to the northeastern flank of the Big Island and you encounter a radically different agricultural reality. The Hamakua coast, running along the windward side between Hilo and Waimea, receives some of the most abundant rainfall in the state. Lush, dense vegetation covers the hillsides. Waterfalls appear around nearly every bend. The air feels thick with moisture in a way that the Kona coast never does.
Coffee has been grown in Hamakua historically, and there is renewed interest in the region as specialty coffee farming expands beyond the Kona belt. But the windward micro-climate presents a genuinely different set of challenges and opportunities. The abundant rainfall that creates such rich soil organic matter also increases the pressure of fungal diseases and coffee cherry borers, which thrive in consistently humid conditions. Managing a coffee farm in this environment requires a different set of interventions and monitoring practices than managing one on the Kona coast.
At the same time, the depth of organic matter in Hamakua soils creates a different mineral and microbial environment at the root zone. The flavor character of Hamakua coffee, when it is grown and processed well, reflects this different soil ecosystem in ways that are tangible in the cup. Research in tropical coffee systems has increasingly focused on predicting variety-specific vulnerability and performance in different micro-climates, recognizing that the interaction between coffee variety, soil chemistry, rainfall patterns, and temperature creates outcomes that cannot be generalized across regions. Hamakua is an excellent example of a micro-climate that demands variety-specific and site-specific decisions at every stage of farming.
Why Kona's Micro-Climate Remains the Gold Standard
After surveying the full range of Big Island coffee micro-climates, it becomes clear why the Kona belt has held its position as the most recognized and celebrated Hawaiian coffee origin for over a century. The specific combination of factors that the Kona micro-climate assembles is genuinely unusual and difficult to find elsewhere on Earth.
Consider what is operating simultaneously in the Kona belt: young, mineral-rich basaltic volcanic soil with excellent drainage and a diverse nutrient profile; a leeward position that reduces wind stress and trade wind rainfall while enabling a localized convective moisture pattern; afternoon cloud cover that provides natural shade during peak heat hours; a diurnal temperature swing that slows cherry maturation and encourages flavor development; moderate, well-timed rainfall that concentrates flavor without stressing the plant; and an elevation range that allows farmers to choose growing conditions suited to specific quality goals. No single one of these factors is unique to Kona. But their simultaneous presence in a coherent, predictable, and agriculturally accessible strip of hillside running along the western slope of Mauna Loa is what makes this place exceptional.
The global coffee community has recognized this. Kona coffee commands premium prices in international markets not because of marketing but because the cup quality consistently justifies the investment. The Big Island's standing as Hawaii's coffee capital rests on the Kona belt's micro-climate more than on any other single factor. For visitors and customers who want to understand what they are tasting, the volcanic growing region in Kona is the essential starting point for that understanding.
Farming With the Micro-Climate: Our Practices at Buddha's Cup
Reading the Land: How We Let Micro-Climate Guide Farm Decisions
Farming in a micro-climate does not mean sitting back and letting nature do everything. It means developing an intimate working relationship with the specific conditions of your land and responding to them in real time throughout the growing year. At our farm in Holualoa, that relationship has been built over years of observation, experimentation, and the kind of practical knowledge that only comes from spending thousands of hours on the same hillside watching the same trees go through the same seasonal cycles.
Harvest timing is perhaps the most direct expression of our micro-climate attentiveness. We do not pick coffee on a fixed calendar schedule. We pick when the cherries on our specific trees, in our specific micro-climate, at our specific elevation, have reached the right stage of ripeness. That means monitoring cherry color not just as a general indicator but in conjunction with ambient morning temperature, overnight humidity, and the specific character of that season's rainfall distribution. A cooler than average winter can push peak ripeness two or three weeks later than the previous year. A stretch of drier afternoons during the summer can accelerate development in certain blocks of the farm. We adjust accordingly, every single season.
Hand-picking is both a quality commitment and a micro-climate response. In an environment where ripening is uneven, as it is in any micro-climate with meaningful temperature variation, only selective hand-harvesting ensures that each cherry is taken at its optimum moment. A strip-picking machine cannot distinguish between a cherry at peak ripeness and one that needs another week. Our hands can. This matters enormously for the final cup, because under-ripe and over-ripe cherries in the same lot introduce off-flavors that undermine everything the micro-climate has worked to build in the well-ripened fruit. The seasonal changes that affect flavor notes in our Hawaiian tea are equally observable in our coffee, and they remind us every year that the farm is a living, dynamic system rather than a static production environment. If you would like to see these decisions being made and understand the farm from the inside, our tours begin at a specific meeting point that you can find through our guide to coffee farm tours in Holualoa.
Processing Choices Shaped by Our Micro-Climate
The micro-climate does not stop influencing our coffee when the cherry leaves the tree. It continues through every stage of processing, from the fermentation tank to the drying bed to the storage room. Understanding and working with these atmospheric influences at the processing stage is just as important as understanding them during the growing season.
Our decisions about wet versus dry processing depend heavily on the conditions present during and after harvest. Wet processing, also called washed processing, involves removing the fruit from the bean quickly and fermenting the bean in water to break down the remaining mucilage before drying. The fermentation stage is acutely sensitive to ambient temperature and humidity. In Holualoa's mid-elevation micro-climate, our fermentation tanks operate in conditions that are cool enough to allow a slow, controlled fermentation that produces clean, nuanced flavor rather than the sharp, funky notes that overly fast fermentation can generate. We monitor fermentation time not by a fixed schedule but by touch and smell, responding to what the ambient conditions are doing on that particular day. Our detailed look at