Introduction:This Castillo variety from Finca Santa Jose in Caldas, Colombia, undergoes a washed process with low-temperature fermentation in rum barrels, imparting intense wine-like aromas and tropical fruit notes. This article delves into its growing environment, innovative processing method, and provides expert pour over recommendations along with authentic cupping flavor profiles to help you master brewing essentials and explore the unique layers of this specialty coffee.
At an elevation of 1,750 meters in Colombia’s Caldas region, Finca Santa Jose employs a unique washed rum-barrel fermented processing method that delivers unprecedented winey richness and tropical fruit character to the Castillo variety. Rated as Supremo-grade beans, this lot is not just a showcase of the varietal but a masterpiece shaped by processing technique and microclimate.
For coffee enthusiasts who enjoy pour over brewing, this bean is recommended at15 grams of coffee to 225 ml of water, with water temperature maintained at90 to 91°C, and a brew ratio of1:15to fully highlight its rich aromatic layers and sweet body.
The resulting cup exhibits distinct rum liqueur warmth, intense center-cut chocolate, bright and tangy tropical fruits, and a lingering maple sweetness in the finish. Such a flavor profile makes it stand out in the pour over category, ideal for advanced drinkers seeking unique taste experiences.
The processing method used for this coffee is a major highlight. The farm carefully selects Castillo cherries sized 17–18 mesh, and after removing the outer skin, instead of proceeding with traditional washing, the beans are placed into aged oak rum barrels for a period of low-temperature fermentation. This fermentation process is tightly controlled in temperature to preserve delicate aromas without over-transformation.
After low-temperature fermentation, the beans undergo standard washing to remove residual mucilage, then are sun-dried on raised beds. This series of processes results in the final cup’s captivating rum aroma and distinctive wooden notes from the barrel, creating a complex and dynamic flavor profile.
Speaking of the Castillo variety, it is actually a disease-resistant new cultivar jointly developed by Colombia’s National Federation of Coffee Growers (FNC) and the national coffee research center Cenicafé. Introduced in 2005, this variety aims to combine high yield, strong disease resistance—especially against leaf rust—while also delivering cup quality comparable to the then-popular Caturra variety.
Historically, in the 1980s, Colombia gradually replaced traditional varieties with the disease-resistant Colombia variety due to the threat of leaf rust, with Caturra later becoming the dominant cultivar. However, when leaf rust resurged massively between 2008 and 2010, Castillo was swiftly promoted. By 2015, studies showed this variety accounted for over 40% of national planting area. Despite past controversies over rumored Robusta genes and cupping performance, multiple sensory evaluations have confirmed its quality is on par with Caturra.
The farm responsible for this special processing method is the century-old Finca Santa Jose, located in the Nevado del Ruiz volcanic zone. Its soil is rich in natural volcanic ash, and the area enjoys stable year-round temperatures (around 21°C to 25°C), providing optimal growing conditions. The farm spans 18 hectares, with 16.5 hectares dedicated to coffee cultivation.
Notably, the inspiration for this rum-barrel fermented process came from the ingenious idea of the farm owner, Madame Monsalve Botero. Her husband has long been involved in rum production and oak barrel crafting, and a chance moment led her to wonder: what if coffee beans were fermented inside rum barrels to bring out unique winey notes? Starting in 2013, she and her team repeatedly tested various fermentation times and temperatures until 2018, when they finalized the ideal process, successfully creating this uniquely flavored specialty coffee.
In summary, this Castillo coffee from Colombia’s Finca Santa Jose not only showcases the varietal’s potential but, through its innovative rum-barrel fermentation process, delivers a whole new pour over experience. If you’re looking to explore flavors beyond traditional washed coffee, try brewing with the suggested parameters to discover the surprising interplay of bold wine aromas and tropical fruit essence.
The above content is compiled by CoffeeHunters, a coffee news website.
