Introduction:Want to explore the unique charm of Brazilian Yellow Bourbon coffee? This article delves into the varietal origins of Queen Estate’s Yellow Bourbon, the high-altitude advantages of the Mogiana region, and its distinctive natural sun-drying processing method. It also provides expert pour-over recommendations, including filter choice, water temperature control, brew ratio, and three-stage pouring techniques, to help you accurately recreate the classic Brazilian bean’s rich chocolate, nutty, and caramel flavors.

African coffees are often known for their vibrant floral notes and lively citrus acidity, while Brazilian coffee takes a distinctly different stylistic approach—generally characterized by low acidity, full body, and prominent sweetness. Among them, the Yellow Bourbon variety from Brazil’s Queen Estate stands out with its clean, crisp profile and balanced flavor structure, making it a top single-origin choice for coffee enthusiasts who prefer bold and rich cups. Next, we’ll comprehensively break down the allure of this classic Brazilian bean, covering everything from varietal heritage and terroir to processing details and pour-over brewing parameters.

To understand what makes Yellow Bourbon special, we must first look at the Bourbon family. The modern Arabica coffee varietal system is primarily built upon two original species: Typica and Bourbon, along with their numerous subsequent offshoots. The Bourbon variety was once widely popular in Central and South America and remains one of the key pillars of Brazilian coffee cultivation.

The name “Bourbon” originates from its birthplace—Bourbon Island, now known as Réunion Island off the eastern coast of Africa. The island was a French colony in the 17th century and was called Bourbon Island until it was renamed in the late 18th century. In the 18th century, the French introduced round-seeded coffee beans from Yemen to Bourbon Island and successfully cultivated them; by 1860, Brazil had imported these round Bourbon beans and gradually promoted them throughout Central and South America, making it one of the oldest coffee parent varieties in Latin America. Bourbon coffee trees bear relatively short, round fruits with denser beans, which often exhibit excellent sweetness and bright acidity in high-altitude environments. Compared to Typica, not only does Bourbon not fall short in flavor, but it also shows better resistance to rust leaf disease.

Common Bourbon varieties change color from green to light yellow, then red, and finally deep red when fully ripe, hence they are called Red Bourbon. The commonly used Brazilian commercial beans are made from this flavorful Red Bourbon. Additionally, there are rare Bourbon varieties that do not turn red when ripe but instead exhibit uncommon yellow or pink hues—these are the origins of Yellow Bourbon and Pink Bourbon.

What Queen Estate takes the most pride in is its carefully cultivated Yellow Bourbon variety. This coffee has won awards multiple times in Brazil’s COE competition due to its delicate and refined flavors. Typically, Bourbon variety coffee fruits go through a standard ripening process of green, light yellow, orange-yellow, red, and finally deep red—a process familiar to us as typical Red Bourbon. Yellow Bourbon, however, ripens to a yellow color, a unique trait first discovered in 1930. According to research by the Campinas Agronomic Institute (IAC), the color of coffee fruits is mainly determined by genetic factors: plants with dominant XcXc gene pairs produce red berries, while those with recessive xcxc gene pairs produce yellow berries. In rare cases, plants with a combination of one dominant and one recessive gene (Xcxc) produce orange berries. Thus, the “yellow” of Yellow Bourbon stems from selective genetic expression. Yellow Bourbon grown at high altitudes can accumulate abundant fructose, resulting in sweet and juicy flavors. This variety even dominated Brazil’s “Cup of Excellence” competition for two consecutive years, sweeping the top three spots and captivating the global specialty coffee scene.

Queen Estate is located in the Mogiana region (Mogiana), situated in the northeastern part of São Paulo, near the southern part of Minas Gerais. Alongside Cerrado and Sul de Minas, it is ranked among Brazil’s three major specialty coffee regions. Compared to most Brazilian coffee regions, Mogiana’s elevation ranges between 1100–1250 meters, relatively high, resulting in more pronounced day-night temperature variations. This helps coffee fruits ripen slowly and accumulate richer flavor compounds. Additionally, the region’s undulating terrain limits large-scale mechanized harvesting, so coffee cherries are mostly picked semi-mechanically or entirely by hand, ensuring only the highest-quality ripe fruits are selected. This has led to the region’s coffee generally achieving Fine Cup status—excellent cup quality and outstanding specialty-grade standards.

After harvesting ripe Yellow Bourbon fruits, Queen Estate employs the natural sun-drying process, allowing the coffee cherries to fully absorb the natural sweetness of the pulp during drying. Since Brazil is located near the equator and the harvest season coincides with the dry season, the climate is arid, making it highly suitable for dehydration via sun-drying.

However, traditional “overexposure” methods are often too crude—harvested coffee cherries are simply poured onto dirt ground to dry, which can easily introduce earthy off-flavors. Uneven heating may also lead to over-fermentation and undesirable aromas. To address this, Queen Estate adopts a more refined processing procedure: first, the coffee cherries are poured into a water tank, where floatation is used to remove unripe or defective beans. Then, the sorted fruits are placed in small batches on African raised beds with better breathability and turned regularly to ensure even drying. This method not only effectively avoids issues with dirt and over-fermentation but also elevates the coffee’s sweetness performance to new heights.

To brew Queen Estate Yellow Bourbon’s classic flavors at home, it’s recommended to use a medium-dark roast to highlight its rich chocolate aroma. Cupping tests show that this coffee’s sweetness is particularly prominent, so a three-stage pouring method is advised to fully showcase its layered and complex flavor structure.

Coffee beans enter their optimal flavor window 4–7 days after roasting. If left for about a month and a half, the aroma may gradually fade and develop some woody notes. To ensure freshness, it’s recommended to purchase beans roasted within 5 days to enjoy them at their best.

For medium-dark roasted coffee beans, filter choice is crucial. These beans typically have a full-bodied and rounded mouthfeel, so a slower-flowing KONO filter is recommended. Its upper section features a smooth curved surface, while the lower part has about one-third the length of flow-guiding ribs, allowing the filter paper to adhere tightly to the filter, reducing air rise and concentrating the hot water downward for a siphon-like extraction effect. This helps fully release the aromatic compounds in the coffee grounds.

In terms of grind size, because medium-dark roasted beans are relatively loose in texture, grinding too finely can lead to over-extraction and produce unpleasant woody bitterness. It’s recommended to adjust the grind slightly coarser, to a medium grind (about 70% passing rate through a Chinese standard No. 20 sieve).

Water temperature control is also key. When brewing medium-light roasted coffee, higher temperatures are often used to extract aromatic compounds. However, for medium-dark roasted Brazilian beans, too high a temperature can easily bring out intense burnt bitterness. It’s recommended to lower the water temperature to87–88°Cto balance bitterness and bring out sweetness.

Regarding brew ratio, it’s suggested to use15 grams of coffee groundswith1:15a 1:13 ratioto brew approximately200 milliliters

of coffee, suitable for 1–2 people.

• Pour-over Parameter Summary:
• Filter: KONO Filter
• Water Temperature: 87–88°C
• Coffee Amount: 15 grams
• Brew Ratio: 1:15

Grind Size: Medium Grind (about 70% passing rate through a No. 20 sieve)In specific operation, start with double the coffee grounds’ weight in water (about 30 grams) for a 30-second bloom to allow the coffee to degas. Then, pour with a small stream in circular motions from the inside out. When the water volume reaches125 grams, perform the first pour pause. Once the coffee bed drops to the middle of the filter, continue pouring the second pour with the same fine stream up to225 grams

until all the coffee liquid has completely dripped through, taking about 2 minutes in total.

The above content is compiled by CoffeeHunters, a coffee news website.