Coffee Processing Methods in the Americas

Understanding how coffee is processed at origin is essential for buyers, roasters, and importers. While traditional classifications—washed, natural, and honey—still dominate the conversation, the reality on the ground is far more nuanced. From mechanical harvesting in Brazil to cooperative-led processing in Peru, each producing country has developed its own approach to post-harvest processing.

In this guide, we break down the dominant coffee processing methods across some of the top producing countries in the Americas, based on insights from our producer network.

Coffee processing directly affects flavour profile and cup quality, shelf life and stability, pricing and marketability, sustainability and water usage. For green coffee buyers, understanding origin-specific practices helps them source the right profiles, manage risk, and build transparent supply chains.

Brazil: Mechanised Natural Processing at Scale

Brazil’s scale and mechanisation make it the global leader in natural processing. Coffee harvesting is predominantly mechanised, typically completed in one or two passes. This is achieved either through large-scale machinery that passes over the entire tree to dislodge ripe cherries or via pole-mounted vibrating “hands” that target individual branches—an approach sometimes still referred to as manual despite its mechanical nature.

A notable feature of Brazilian coffee production is the use of “floaters”—cherries that have either partially or fully dried on the tree. These are often associated with desirable cup profiles, rather than being the result of under-ripeness or poor maturation.

Post-harvest, the majority of coffee is initially dried on patios. Once moisture content drops below approximately 20%, mechanical dryers are commonly used to complete the drying process efficiently and consistently. Dry milling is frequently performed on the farm itself, streamlining the supply chain, although a final cleaning stage is typically handled by exporters to meet export-grade standards. After milling, green coffee is rested in wooden silos, allowing for stabilisation before shipment.

• Dominant Process: Natural (60–70%)
• Harvesting: Mechanised (Mechanical units or vibrating poles)
• Drying: Patios + mechanical dryers
• Post-Harvest: Dry milling often on-farm; green beans rested in wooden silos

Colombia: Washed Coffee with Infrastructure Support

Coffee in Colombia is almost exclusively processed using the washed method, with over 95% of production following this approach. This is despite the reputation Colombian producers have for experimental, highly innovative natural processing. Protected Denomination of Origin status has been achieved in recognition of this.

Cherries are handpicked at peak ripeness, often requiring multiple passes through the trees to ensure quality. Once harvested, the beans are pulped and fermented, typically in tanks, before being dried.

Drying is carried out on patios and raised beds, though vertical mechanical or horizontal drum dryers are common on larger farms and at centralised collection centres. These centres, which may be independent or operated by larger farms, receive coffee in various states: dried, semi-wet, or fully wet, each commanding different prices.

In cases where drying space is limited, the Colombian Coffee Growers Federation (FNC) advises submerging parchment coffee in water tanks to preserve quality until drying can resume. This infrastructure and guidance help maintain Colombia’s reputation for consistent, high-quality washed coffees.

• Dominant Process: Washed
• Harvesting: Manual, selective picking
• Drying: Patios, raised beds, vertical dryers, guardiolas

Colombia’s washed coffees are globally recognised, with infrastructure that supports smallholders and maintains quality.

Costa Rica: Washed with Innovation

Costa Rica’s coffee production is dominated by the washed process, accounting for approximately 94% of output. Manual picking remains the standard, with cherries often delivered to roadside collection points where beneficios handle both wet and dry processing.

While traditional fermentation tanks are still used, many cooperatives have adopted centrifugal demucilagers. These machines use a combination of spray, friction, and centrifugal force to remove mucilage, significantly reducing water usage and minimising fermentation-related defects. This innovation opens questions over whether such coffees should still be described as “washed,” given the absence of traditional fermentation. Drying is carried out on patios and raised beds, with mechanical dryers used by cooperatives to ensure consistency and throughput.

• Dominant Process: Washed
• Innovation: Centrifugal demucilagers reduce water use and fermentation risks
• Drying: Mix of patios, raised beds, and mechanical dryers
• Collection: Cherries not parchment delivered roadside to collection centres.

Costa Rica leads in eco-efficient processing, and has refined its pioneering techniques like white, yellow, red, and black honey processes.

El Salvador: Traditional Washed with Growing Diversity

In El Salvador, washed coffee remains the chief processing method, representing around 80% of production. Cherries are typically pulped and fermented before being dried on patios, although mechanical dryers such as guardiolas are becoming increasingly common, especially among larger producers. Natural and honey processes are also present, each accounting for roughly 10% of the country’s output. These alternative methods are often used to diversify offerings and meet demand from specialty buyers seeking unique profiles.

• Dominant Process: Washed
• Drying: Patios and increasing use of guardiolas
• Other Methods: 10% natural, 10% honey

The mix of honey and naturals seem bigger here as the country pushes to differentiate, but don’t let the lower volume of coffee overall affect perceptions.

Guatemala: High-Altitude Washed Coffees

Guatemala’s coffee sector is heavily skewed toward washed processing, with estimates ranging from 85% to 99% depending on the source. Cherries are pulped and fermented, then dried on patios and perhaps finished mechanically. Due to the country’s mountainous terrain, patios are frequently located on the rooftops of homes and processing facilities, maximising space and sun exposure.

Honey and natural processes are not common but are gaining traction among producers looking to differentiate their coffees in the specialty market. Mechanical drying is increasingly used to ensure consistency, particularly in regions with unpredictable weather.

• Dominant Process: Washed
• Drying: Patios and rooftops
• Other Methods: 5–15% honey, 0.5–5% natural

Honduras: Cooperative-Driven Washed Production

Honduras, the leading coffee producer in Central America, overwhelmingly favours the washed method. Most coffee is processed on-farm, with parchment delivered to cooperatives for further handling. While some mills are experimenting with centralised cherry reception and even colour sorting, most production still relies on traditional practices. The cooperative model plays a crucial role in maintaining quality and providing market access for smallholders, who benefit from shared infrastructure and drying facilities.

• Dominant Process: Washed
• Processing: Mostly on-farm; parchment delivered to cooperatives
• Innovation: Some cherry colour sorting alongside emerging centralised cherry reception
• Other Methods: 3% natural, 10-15% honey

Mexico: Washed Simplicity

Mexico’s coffee production is largely centred around washed processing. Cherries are manually harvested and pulped, then dried on patios. While infrastructure varies by region, the washed method remains the most widely adopted, offering producers flexibility in both domestic and export markets. The ICO noted however the isolated approach to processing could benefit through more collaborative efforts. A lack of compliance to good wet-processing practices can have a big effect on consistency, and so dry processing can deliver higher quality.

• Dominant Process: Washed
• Processing: Mostly on-farm using inherited practises
• Drying: Patios

The increased growth of Canephora may impact the processing norm here as the new planting and a switch of species impacts production figures.

Nicaragua: Washed

In Nicaragua’s coffee industry, washed processing continues to dominate, accounting for approximately 97% of output. Cherries are typically processed on-farm, with parchment delivered to collection centres that transport it to centralised dry mills. These have guardiolas for processing any wet or semi-wet beans received.

A recurrent feature of Nicaraguan processing is the use of water channels, which serve multiple purposes: density sorting, cleaning, and transporting beans. Drying is primarily done on patios, though raised beds and mechanical dryers such as guardiolas are also in use, particularly among producers targeting the specialty market. Honey and natural processes are present amongst speciality producers but remain marginal in the national mix.

• Dominant Process: Washed
• Drying: Patios, raised beds, guardiolas
• Operations: Use of channels for density sorting and cleaning

Peru: Cooperative-Led Washed Processing

Peru’s coffee industry is exemplified by the washed process, with over 95% of production involving pulping and tank fermentation before sun-drying. Drying typically takes place on patios using tarpaulins, or beneath the roofs of farmers’ homes, though raised beds are becoming increasingly common, especially in cooperative drying stations.

These stations often feature greenhouse-style or parabolic drying structures, offering more controlled and scalable post-harvest environments that help maintain consistency and quality. While natural and honey processes remain rare, they are gradually emerging as producers explore new market opportunities and diversify their offerings.

• Dominant Process: Washed
• Fermentation: Tank-based
• Drying: Patios, loft spaces, raised beds, parabolic dryers

Cooperatives typically assess yields early in the year, around January or February, by sending agronomists to check the harvest potential of each farm.

Key Takeaways for Coffee Buyers

• Washed processing dominates in Latin America, with Brazil as the major outlier.
• Infrastructure and cooperative models play a key role in quality and consistency.
• Innovation is rising, especially in Costa Rica and Colombia, with eco-friendly and hybrid methods.
• Understanding local practices helps in sourcing, pricing, and building traceable supply chains.

Looking for Origin-Specific Coffee Insights?

We work directly with producers across Latin America. If you’re sourcing green coffee or building a traceable supply chain, we can help you navigate origin-specific processing practices. Contact us to discuss sourcing strategies or request regular market reports.