What does SOE espresso mean on a cafe menu?

SOE stands for Single Origin Espresso, an espresso pulled from beans of one specific origin rather than a blend. Its purpose is to highlight that origin's flavor, and on cafe menus it often appears as an upgrade option. Because single-origin beans vary in density and moisture, they need their own roasting profile instead of a light filter roast.

SOE rose in popularity as single-origin beans gained attention in brewing competitions and pour-over menus, showing regional character in espresso too. Single-origin coffee is not automatically specialty coffee, since the specialty label comes from quality standards, not origin alone. Compared with espresso coffee beans in a blend, SOE offers clarity but less consistency across the year.

When ordering at a coffee shop, you often see menu items marked "switch to SOE for 3 yuan extra." What exactly is SOE? Does switching to it really make coffee taste better? This article will start with the definition and origins of SOE and its relationship with specialty coffee, analyze its flavor advantages and production challenges, and explain why SOE espresso beans require a specially developed roasting profile rather than directly using light-roasted filter beans. It will also compare the differences between SOE and espresso blends, and, using examples from Front Street Coffee's Yirgacheffe Gedeeb, Sherry, and Warm Sun blend, show that SOE is not absolutely superior to blends but that each has its own suitable scenarios.

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"When ordering at a coffee shop, you often see under the espresso menu, [switch to SOE for 3 yuan extra]." So what exactly does this SOE refer to, and does switching to it really make it taste better? In this barista training note, we will introduce what SOE is.

What is SOE?

SOE is the abbreviation of "Single Origin Espresso," which in Chinese means "single-origin espresso." Its core is to highlight the coffee flavor of a specific origin. In plain terms, it uses single-origin coffee beans to make espresso. Its counterpart is espresso blend coffee beans. Front Street has also repeatedly mentioned that blended beans seek a balance among flavor, stability, and price: if you want both taste and stability, the cost will be relatively high; if price and stability are the priority, some flavor must be sacrificed.

SOE is different. Let us first look at the background of its rise: SOE only became popular in recent years. Single-origin coffee beans can display rich and diverse regional characteristics in pour-over brewing, and with the increasing diversity of information channels, news of single-origin beans being used by competitors in world barista competitions spread widely. As a result, using single-origin beans for espresso also became a trend.

Does SOE coffee belong to specialty coffee?

This question is actually equivalent to: Is single-origin coffee specialty coffee? The answer is that they are not completely equivalent. The concept of specialty coffee was first proposed in the 1970s and 1980s. At that time, yield was the primary goal, coffee beans were processed centrally by origin, and exports were carried out by country to earn foreign exchange. One can imagine that when beans of varying quality are mixed together, it is already not easy if there are no obvious negative flavors.

Back then, Ms. Erna Knutsen proposed that specialty coffee is "coffee beans cultivated with regional flavors under the unique microclimate and geographical conditions of the origin." Its essence is that good coffee should not be mixed into large volumes of bulk commodity beans, but should be separated out, thereby distinguishing it from the bulk commercial coffee of the New York futures trading market.

Therefore, specialty coffee beans require good varieties, a good environment, and meticulous cultivation to produce high quality and good flavor; single-origin coffee beans merely refer to coffee beans from a single origin with regional flavor, and there is no hard requirement for quality. For example, Front Street Indonesia Lintong Mandheling G2 is a single-origin coffee bean, but it is not necessarily a specialty coffee bean (specifically, this still depends on the cupping score). Of course, the single-origin coffee we drink in coffee shops is almost 100% specialty coffee beans.

What are the advantages and disadvantages of SOE coffee?

In Front Street's view, SOE has been labeled since its birth as "having good regional flavor," which means the quality of the selected coffee beans must be guaranteed. To highlight the advantages of SOE, the flavor must be prominent and eye-catching. This requires not only good beans but also suitable roasting.

To satisfy stability and make up for insufficient quality, espresso blend beans are often roasted darker to stabilize the flavor. But if SOE is to show striking flavor, it cannot simply copy the approach used for blended beans, nor can it directly use light-roasted single-origin beans intended for pour-over to make SOE—if the roast is too light, the extracted espresso will be both sour and astringent. Therefore, SOE beans require a specially developed, unique roasting curve.

Making a delicious SOE is not simply a matter of choosing a high-quality single-origin bean; it requires countless roasting experiments and extraction adjustments before the ideal result may be achieved (sometimes, after multiple roast profiles and extractions, you will find that a bean is just not suitable for espresso). Espresso magnifies the flavor of a single-origin bean, and it also magnifies its flaws. For example, some beans with good flavor may be lacking in mouthfeel. Therefore, in shops that offer SOE, there are often only 1-2 SOE single-origin beans available for customers to choose from.

Of course, a latte or americano made with SOE will have a flavor that blends cannot match. For example, an americano made with a properly extracted Front Street Yirgacheffe Gedeeb SOE can clearly show notes of citrus, floral, and honey, and the lingering aroma left in the cup after drinking is especially noticeable, which is something some bitterness-focused blends cannot achieve.

Is SOE better than blend coffee beans?

A fairly common phenomenon on the market is that most blended beans, in order to achieve price advantages and flavor stability, taste relatively middle-of-the-road; SOE, on the other hand, exists precisely to distinguish itself from such blends and to present a memorable taste, so flavor is given priority, and the price is also higher.

But this common phenomenon does not prove that SOE is completely superior to blends. When Front Street was developing the Sunflower Warm Sun blend, it also considered making a Sherry SOE coffee bean. During tasting, it was found to be full of winey notes but lacking sweetness and mouthfeel. So the idea came to add Front Street Yirgacheffe Red Cherry to increase sweetness.

In the end, through tests with different ratios, it was confirmed that using 70% Sherry and 30% Yirgacheffe created the Warm Sun blend with a completely new taste. The espresso made from it not only tasted better than the Sherry SOE, but also had layers of aroma that regular dark-roasted blends do not have.

In short, the emergence of SOE also represents increasingly high quality requirements for espresso coffee beans, and overall it is beneficial to the development of espresso coffee.

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