Why Choose Blended Coffee Beans for Espresso Drinks?

Blended coffee beans combine origins, varieties, and processing methods so the components complement each other for flavor balance and year-to-year consistency. Four Front Street espresso recipes illustrate the approach, using Colombian Huila, Brazilian Cerrado, Robusta, and Yunnan AA. The comparison with single-origin beans and the SOE trend explains why blends suit Espresso, Latte, and Cappuccino.

Pre-roast blending mixes green beans before roasting; post-roast blending roasts each bean separately and mixes afterward, which allows a different roast level per component. Ratios, roasting approaches, and flavor descriptions are given for each recipe. Blends also even out seasonal variation, since one origin's shortfall can be offset by adjusting the proportion of the others.

Blended coffee beans are not a simple mixture, but rather a combination of beans from different origins, varieties, and processing methods that complement each other to achieve flavor balance and year-to-year consistency. This article starts from Front Street Coffee's four espresso blends, outlining the purpose of blending, the differences between pre-roast blending and post-roast blending, and the roles of bean varieties such as Colombian Huila, Brazilian Cerrado, Robusta, and Yunnan AA in the recipes. It also compares single-origin beans with the SOE trend of recent years, explaining why espresso blends are better suited for making Espresso, Latte, and Cappuccino, and provides specific ratios, roasting approaches, and flavor descriptions.

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Today Front Street Coffee wants to talk with you about two types of coffee beans with completely different characters: single-origin beans and blend beans.

So-called blended coffee, also called combined coffee, is made by mixing multiple single-origin coffee beans in a certain proportion so that each bean's strengths can be brought out. Blend beans are composed of coffee beans from different origins, with the goal of achieving a more balanced flavor. Front Street currently offers four espresso blend beans with distinct styles. For example, if one bean is smooth in mouthfeel but lacks aroma, you can blend in another bean with a prominent aroma, letting the advantages of each coffee bean complement each other—whether complementing or reinforcing in taste—ultimately forming a new flavor with richer layers. Sometimes the green beans are mixed first and then roasted, which is called pre-roast blending; sometimes each bean is roasted separately first and then mixed, which is called post-roast blending.

For single-origin coffee beans, whether pre-mixing green beans or roasting separately before blending, the decision must be based on the characteristics of the coffees in the recipe. Both approaches are valid. The advantage of blending after roasting is that you can give each bean a different roast level, allowing each component to show its best state.

Before blending, Front Street Coffee usually first understands the flavor characteristics of different coffee varieties from around the world, because beans have their own features depending on origin. Different coffee beans have different personalities due to variety and origin, with subtle differences in acidity, bitterness, sweetness, aroma, body, and more. Single-origin coffee beans often emphasize the unique characteristics of a particular type of coffee. Blend beans, however, are mostly used for espresso drinks such as Espresso, Americano, Latte, or Cappuccino, with a more balanced, smoother, and more stable taste—one could say the flavor is closer to the general public.

Mixing different coffee beans into a blend is mainly for the following purposes:

1. Flavor consistency Coffee beans are an agricultural product. Even for the same variety, the flavor may vary from year to year. By mixing several coffee beans into a blend, this problem can be better solved, keeping the taste basically stable each year.

2. Balanced taste Espresso machines have a characteristic of amplifying the most prominent flavors of coffee beans. Therefore, we almost never use a single variety of coffee to make Espresso; otherwise, if that bean is on the bitter side, the resulting Espresso will be extremely bitter; if it is on the acidic side, it will be very sour. So blending is needed to balance the various tastes.

Front Street Coffee believes that blending coffee is by no means simple addition, but rather hopes to rely on the blender's unique understanding of coffee flavors to let different coffee beans learn from each other's strengths and offset each other's weaknesses, creating a blend bean with outstanding flavor.

3. Stable flavor Coffee beans are an agricultural product. Even for coffee beans of the same variety and the same producing region, the flavor may differ from year to year. By mixing several coffee beans together, this problem can be well solved, keeping the flavor basically consistent each year.

The formation of the single-origin SOE trend:

SOE has become popular in recent years. SOE stands for Single Origin Espresso. It does not necessarily equal specialty coffee, but if you choose single-origin coffee beans with easily recognizable flavors to make SOE, you can produce an espresso with a unique and typical flavor. For example, Yirgacheffe's signature citrus flavor, Kenya's fruity flavor, and so on—plus espresso amplifies coffee's taste, so specific flavors are more prominent compared to pour-over. However, Front Street Coffee believes that although SOE performs impressively, because it comes from a single origin, its shortcomings are also relatively easy to amplify, so factors such as roasting and grind size will affect the flavor, and therefore it is not necessarily tastier than blended coffee.

So how do Front Street Coffee's baristas blend a blend bean with a unique flavor?

(1) Front Street Coffee specialty blend bean: Colombia:Brazil, ratio 3:7

Colombia Huila Region Located in southwestern Colombia, it is one of the major coffee-growing regions. Colombia generally ranges from 1,500–1,800 meters in altitude, mostly Bourbon and Caturra varieties, washed processing, with relatively high density and uniform screen size, and plump bean shape (thicker from the center to the surface). Because many famous coffee-growing areas are distributed within the Huila region, the names of various small areas circulate as brand names. Although the growing conditions in this region are very good, the cultivation infrastructure of coffee farms and surrounding conditions is still not very developed. It is regrettable that green bean drying equipment and washed processing facilities are still not perfect. Front Street Coffee has cupped many coffee beans from the Huila region and believes that the Huila region has a strong mouthfeel and a heavier body.

In particular, the nutty, chocolate, and caramel aromas and suitable acidity of coffee from the Huila region can be called premium specialty coffee. And the caramel and other aromas and suitable acidity can be called premium specialty coffee.

Flavor characteristics: rich and solid mouthfeel, with pleasant acidity, fragrant aroma, moderate acidity, and rich sweetness that is very intriguing. Because it is inexpensive and the beans are small, it is suitable for blending. The coffee has a strong mouthfeel and a heavier body. Its nutty, chocolate, and caramel aromas and suitable acidity can be called premium specialty coffee, suitable as a single origin or as an espresso blend base.

Brazil Cerrado Region Brazilian coffee generally grows at altitudes of 1,000–1,300 meters, so its density is relatively low. Mostly Bourbon variety, using semi-washed processing. With moderate moisture content, the bean texture is relatively soft, and the thickness from the bean surface to the center is relatively thin, so it is not suitable for roasting at too high a temperature; the temperature of the boiler's inner wall will scorch the bean surface, producing a burnt bitter taste;

At the same time, if you want to express the characteristics of nuts, milk chocolate, and better body, and use it as a blend base, Front Street Coffee adopts the method of dropping the beans at medium heat, maintaining the heat until the dehydration stage, and making slight adjustments as the temperature rises after first crack begins, promoting a fuller caramelization reaction. When the temperature rises close to second crack, the beans can be discharged.

Flavor characteristics: comfortable bittersweet taste, extremely smooth on entry; with a faint grassy aroma, fresh fragrance with slight bitterness; sweet and smooth, with a pleasant finish;

Flavor after blending: a sweet and fragrant taste. Using a medium-dark roast, when making espresso, the taste will have soft slight acidity, light sweetness, and a nutty sweet aftertaste. The overall feeling is not too stimulating, peaceful, and the crema is medium.

(2) Front Street commercial espresso blend coffee beans:

Colombia:Brazil:Robusta; ratio 3:6:1, pre-roast blend;

[Robusta] beans have strong resistance to pests and diseases and high yield. They are usually less acidic than Arabica beans and often carry a slight woody aroma. Their caffeine content is 2.2%, higher than Arabica beans' 1.2%, and their chlorogenic acid content is also higher. They are also quite bitter and are usually used in commercial beans, costing less than Arabica beans.

In terms of the flavor of a single bean, the coffee taste obtained from commercial beans is much inferior to that of specialty coffee beans. Generally, commercial beans are chosen for blending, and through blending, coffee with a very good taste can also be made, suitable for making lattes, cappuccinos, and other espresso drinks. Front Street Coffee's commercial blend, when made into Espresso, because it contains Robusta beans, will have a richer crema, a classic taste, caramel sweetness, nutty and cocoa-like, dark chocolate flavors, balanced acidity and sweetness, a slight bittersweet note, and a lasting finish.

(3) The espresso moka pot coffee beans recommended by many Front Street Coffee baristas—Front Street Dark Cocoa Blend Coffee Beans:

Yunnan AA:Brazil; ratio 3:7, post-roast blend; Front Street Coffee's Yunnan AA is [Typica], the oldest native variety from Ethiopia, produced in Ethiopia and southeastern Sudan. All Arabica varieties derive from Typica. The top leaves are copper-red, so it is called red-top coffee. It has an elegant flavor but a relatively weak constitution and poor disease resistance, easily contracting leaf rust, and low yield. Typica has four slender branches, spreading outward, with an inclination angle of 50–70 degrees. The opposite leaves are long oval-shaped, with smooth surfaces, very long terminal branches, and few side branches. The flowers are white and bloom at the base where the petiole connects to the branch. Ripe coffee cherries look like cherries and are bright red.

It requires more shade during cultivation and can only be harvested about once every two years. Yunnan's high-quality geographical and climatic conditions provide good conditions for coffee growth. The planting areas include Lincang, Baoshan, Simao, Xishuangbanna, Dehong, and other prefectures. Yunnan's natural conditions are very similar to Colombia's: high altitude and large temperature differences between day and night. Its flavor is mellow, with moderate acidity, a rich and full-bodied taste, uniform beans, high oil content, and fruity aromas. Its quality and taste are similar to Colombian coffee.

Blend flavor: soft fruity acidity, caramel sweetness, nutty and dark chocolate flavors, smooth and viscous, but the taste is on the lighter side.

Front Street Coffee believes that for a blend bean with good flavor, there must be a distinction between primary and secondary components when blending, so that a more wonderful taste than single-origin coffee can be created. For example, before formulating a blending plan, Front Street first envisions a suitable combination method, then blends through appropriate roasting, and determines the best plan through cupping and later adjustments, hoping to help everyone.

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