Does yellow bourbon coffee work as a single origin espresso?

Single-origin beans do not guarantee a good SOE. A side-by-side test of Yellow Bourbon from Queen's Estate in Brazil's Mogiana region, grown between 1,400 and 1,950 meters, made the gap clear: the pour-over cup showed fresh sugarcane sweetness with black tea and nutty chocolate, while the espresso shot turned astringent like peanut skin with a thin body.

Coffee is an agricultural crop, so terroir and climate shift its flavor each year, and the extraction method reshapes it further. The nutty, caramel character of Brazilian beans suits espresso as a base note rather than a solo shot, which is why recipes for three espresso blends build on that profile.

Does SOE (Single Origin Espresso) equal specialty coffee, and does it equal great taste? The answer is no. As a crop, coffee's flavor fluctuates year by year with terroir and climate, and the choice of extraction method also brings noticeable differences. Front Street Coffee conducted a comparative experiment using Yellow Bourbon from Queen's Farm in Brazil's Mogiana region, grown at 1,400 to 1,950 meters—comparing pour-over and espresso: the pour-over version showed the fresh sweetness of sugarcane juice with notes of black tea and nutty chocolate, while the SOE version revealed astringency like peanut skin and a thin body. This shows that not all single-origin beans are suitable for espresso; and the nutty, caramel character of Brazilian beans is precisely the ideal base note for espresso blends. At the end of this article, we include an analysis of the recipes for three of Front Street's espresso blends.

For more professional coffee knowledge and first-hand coffee bean information, welcome to follow Cafe Style's WeChat public account: cafe_style.

To learn more about specialty coffee beans, welcome to add Front Street Coffee's personal WeChat: qjcoffeex.

SOE is not inherently synonymous with specialty coffee; SOE does not necessarily mean it tastes good; SOE does not represent outstanding quality; SOE cannot guarantee it is superior to traditional espresso.

As specialty coffee culture continues to spread, more and more consumers are beginning to understand: a high-quality coffee bean can express the unique terroir imprint of its origin. To make this regional character more distinct, many cafes choose single-origin coffee beans as the raw material when serving pour-over or espresso.

As a result, many people form the impression that any drink made with single-origin beans is specialty coffee, that its quality must be better, and that its taste is destined to be superior. This is not the case! Coffee is essentially an agricultural crop, and each year's terroir and climate conditions affect its flavor, so there are clear differences in flavor from year to year.

Even coffee from the same origin may not deliver stable flavor, and the choice of extraction method can further reshape its flavor direction on top of that.

For this reason, when the same single-origin bean is used for pour-over, the larger extraction ratio often makes the overall taste appear balanced and just right; but once it is handed to an espresso machine, brewed under high temperature and pressure with a smaller extraction ratio, the concentration rises, and the bean's deficiencies or negative traits are easily exposed.

To this end, Front Street Coffee specially selected Yellow Bourbon coffee beans from Queen's Farm in Brazil's Mogiana region, grown at an altitude of 1,400 to 1,950 meters, to carry out a comparative experiment between pour-over and espresso extraction.

Yellow Bourbon cultivated at high altitudes usually delivers a very impressive flavor profile: prominent nutty and chocolate notes, balanced and smooth acidity, mild and clean bitterness, and an overall bright, refreshing impression.

To give this bean a fuller body, Front Street Coffee roasted it to a medium-dark level. Cupping results confirmed that this Brazilian Queen's Farm coffee bean gives off an intense chocolate aroma, with nutty flavors and a sweetness resembling cane sugar, bright yet full-bodied, smooth and delicate on the palate.

The pour-over recipe is as follows: use a Kono dripper, water temperature 88°C, coffee-to-water ratio 1:15, dose 15 g, grind size close to granulated sugar particles (70% passing a No. 20 standard sieve).

Pouring follows a three-stage rhythm: first pour 30 g of hot water and bloom for 30 seconds; then pour to about 125 g, and when the liquid level drops halfway, perform the final pour, topping up to 225 g; finish extraction when dripping is fully complete, with the whole process taking about 2 minutes 10 seconds.

Flavor performance of the pour-over Brazilian Queen's Farm: on entry, a fresh sweetness like sugarcane juice, accompanied by a black tea base and a soft, flowing fruity sweetness, with clearly identifiable nutty flavors, balanced and smooth acidity, mild and clean bitterness, along with an intense chocolate aroma and nutty notes.

The extraction conditions for the espresso part are: espresso machine, water temperature 94°C, extraction pressure 10 bar, dose 20 g, ground extremely fine, total extraction time 25 seconds.

The SOE version of the Brazilian Queen's Farm performed as follows: a fairly intense roasted peanut aroma, yet with a faint astringency of peanut skin; the body was overall loose and not solid enough, lacking in richness, and tasted somewhat thin.

This comparative experiment shows that not every single-origin bean can extract a satisfying espresso, and its stability is also inferior to blended coffee beans.

However, the signature nutty and caramel traits of Brazilian beans happen to make them suitable as the base note for espresso blends. For this reason, among the espresso blend beans currently sold by Front Street Coffee, three use Red Bourbon from Brazil's Cerrado region as the core player, paired with beans from different origins to enrich the coffee's overall flavor from various dimensions.

"Front Street Coffee Specialty Blend Coffee Beans": an espresso bean highlighting nutty aroma, with a recipe of 70% Brazilian semi-washed beans paired with 30% Colombian washed beans, capturing notes of nuts, dark chocolate, and caramel.

"Front Street Coffee Commercial Blend Coffee Beans": an espresso bean taking a full-bodied route, composed of 60% Brazilian semi-washed beans, 30% Colombian washed beans, and 10% Robusta washed beans, showcasing nutty, cocoa, and caramel flavors, with a particularly prominent body.

"Front Street Coffee - Espresso Moka Pot Coffee Beans Recommended by Many Baristas - Front Street Dark Cocoa Blend Coffee Beans": an espresso bean positioned as slightly acidic yet full-bodied, using 70% Brazilian semi-washed beans with 30% Yunnan washed Arabica coffee beans, presenting soft, rounded fruit acidity along with caramel and nutty flavors.

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