Alejo Castro

Alejo Castro Khale is a fifth-generation coffee producer who manages the historic Volcán Azul estate, located on the slopes of the Poás Volcano in the Alajuela province of Costa Rica. Drawing upon over 200 years of family tradition, Castro has transformed the estate into a hub of modern specialty coffee production. His work is defined by a rigorous approach to both agricultural management and post-harvest processing, positioning him as a globally respected figure in the industry.

The farm is notable for its immense biodiversity, with Castro cultivating 27 different coffee varieties, including highly sought-after cultivars such as Gesha, SL28, and Mokka. By maintaining such a diverse portfolio, Castro is able to experiment with how different genetic profiles respond to the specific microclimates of the Poás Volcano, which sits at elevations ranging from 1500 to 1700 meters above sea level.

Innovation is the cornerstone of Castro’s operations at Volcán Azul. More than 50% of the farm's production utilizes unique, experimental processing methods, most notably anaerobic fermentation. These techniques are carefully calibrated to enhance the inherent characteristics of the coffee, often resulting in complex flavor profiles that feature notes of red fruits, spices, and distinct, clean acidity. His approach to processing is highly technical, involving precise monitoring of variables like Brix levels and fermentation temperatures.

In practice, this commitment to quality extends to the farm's environmental stewardship. For instance, in his managed Gesha plantations, Castro avoids the use of herbicides, instead utilizing ground cover to cool the soil and prevent erosion during the rainy season. This focus on sustainability and conservation is a central tenet of his philosophy, ensuring that the land remains productive and healthy for future generations.

For roasters and consumers, the name Alejo Castro has become synonymous with consistency and excellence. His coffees are frequently featured by specialty roasters worldwide, often highlighted for their clean, vibrant, and complex cup profiles. Whether producing traditional washed Caturra or experimental warm anaerobic natural SL28, Castro’s ability to bridge traditional farming wisdom with modern scientific inquiry has made his lots highly desirable in the specialty market.

Today, the story of Volcán Azul stands as a testament to the impact of producer-led innovation. By maintaining direct relationships with roasters and continuously pushing the boundaries of what is possible in coffee processing, Castro has secured his farm's reputation as a leader in Costa Rican specialty coffee. His ongoing work continues to influence how producers in the region approach both quality control and the preservation of their natural environment.