Introduction:An in-depth look at the COE auction-grade Yellow Bourbon natural-processed coffee beans from Fazenda Rainha (Queen Estate) in Mogiana, Brazil. From its high-altitude growing environment and meticulous semi-natural processing to professional roasting recommendations and pour over parameters, this guide will help you master the characteristics of this specialty bean—known for its pronounced tropical fruit aroma and outstanding sweetness. Whether brewed as a single origin or used in espresso, it showcases unique layers of flavor.
Located in the high-altitude Mogiana region of São Paulo State, Brazil, Fazenda Rainha (Queen Estate) is owned by the Carvalho Dias family and is a repeat champion in the international COE competitions. Since the first Brazilian COE event in 1999, four estates under this family have consistently earned accolades. Among them, Fazenda Rainha secured second place in 2000, third place in 2001, and has been shortlisted for auctions multiple times. Situated at elevations between 1200 and 1400 meters, the estate enjoys a cool climate with abundant annual rainfall—ideal growing conditions for the Bourbon variety. In particular, some of the estate’s century-old trees yield dense, flavorful cherries.
The Yellow Bourbon beans from Fazenda Rainha are hand-picked and processed using the semi-natural (Pulped Natural) method, ensuring that the cherries are delivered to the processing facility on the same day they are harvested. First, they are washed to remove impurities, then depulped using a pulper to separate the fruit flesh, while leaving part of the mucilage layer on the parchment for sun drying. This process gradually reduces the moisture content to 20%, allowing the beans to absorb more sweet compounds while avoiding the over-fermented flavors that can result from full natural processing. The beans are ultimately dried to 11% moisture content, then rested and hulled for grading—resulting in a cup profile that is sweet, clean, with soft acidity and a pronounced tropical fruit aroma.
This COE-grade Yellow Bourbon bean'smain flavor profile features notes of cream, nuts, chocolate, and a black tea finish. It delivers a prominent sweetness on the palate, with delicate citrus acidity and sugarcane-like sweetness interwoven throughout, followed by a long, layered finish. It is well-suited for medium-light to medium roasting, which helps preserve its bright acidity and full body. For pour over brewing, we recommend using a V60 filter, with a brew ratio of 1:15, water temperature around 88–89°C. Start with a 30g bloom for 27 seconds, then proceed with pulse pouring to reach 225g total. This approach effectively extracts its rich aroma and sweetness.
In terms of roasting recommendations, a medium roast level strikes a balance between the body and the bright fruitiness of the Yellow Bourbon. Over-roasting may mask its subtle flavors. When brewed using an espresso machine, it can be used as a single origin or as a blend base—producing shots with distinct caramel and nutty tones, ideal for lattes or cappuccinos. Additionally, this bean performs well with full immersion brewing methods such as French press or siphon, fully showcasing its rich body and the black tea-like notes in the finish.
Fazenda Rainha’s processing system maintains strict quality control at every step—from hand harvesting and same-day processing, to staged drying and resting—to ensure consistent and stable flavor profiles. Its semi-natural method preserves the sweetness brought by the mucilage while precisely managing the drying process to avoid over-fermentation or moldy flavors. It stands as one of the exemplary models of high-altitude specialty coffee from Brazil.
Regarding the COE (Cup of Excellence) program, it is a non-profit initiative organized by the Alliance for Coffee Excellence (ACE) in the United States. Each year, it partners with coffee-producing countries to host specialty coffee cupping competitions. Through rigorous judging and online auctions, it selects the finest coffee beans of the year. Coffees selected for COE not only represent the highest quality of their producing regions but also offer consumers a window into the world of specialty coffee.
In summary, the COE auction-grade Yellow Bourbon natural-processed beans from Fazenda Rainha in Brazil, with their high-altitude growing conditions, refined semi-natural processing, and distinctive tropical fruit flavors, make them an excellent choice for coffee enthusiasts exploring specialty coffees from Brazil. Whether brewed via pour over, French press, or espresso, these beans reveal their sweet, full-bodied, and multi-layered unique charm.
The above content is compiled by CoffeeHunters, a coffee news website.
