Do baristas dream of pre-extracted espressos?

Espresso no longer needs to be extracted at the moment of ordering to reach the cup with quality. The practice of preparing, storing, and serving pre-extracted shots – known as pre-batched espresso – is gaining ground in high-traffic coffee shops in cities like London, Melbourne, and New York. Advocated by some professionals as a way to increase efficiency without compromising sensory results, the technique has sparked debate among baristas and attracted attention on social media.

The expansion of pre-batched espresso also reflects structural changes in the specialty coffee market. According to American consultant Scott Rao, author of *The Coffee Roaster's Companion* and considered one of the leading authorities on specialty coffee roasting, the technique has gained traction not only because it is innovative, but also as a response to operational challenges faced by coffee shops. “Like batch brewing of filtered coffee, this technique saves time and labor. Pre-extracted espresso is becoming popular in Australia, undoubtedly because the country has the highest number of specialty coffee shops per capita in the world, salaries are high, and coffee shops struggle to keep up with inflation and raise prices,” he states in an interview with Espresso.

The discussion also touches on understanding pre-batched espresso as a tool. Henrique Ortiz, co-founder of the Catarina Café & Amor coffee shop and roastery in Vila Mariana, São Paulo, believes that the technique should be seen as an additional resource, not a substitute for the work of a professional. "It's just another tool available to baristas to improve the customer experience, whether by reducing waiting time or increasing the consistency and quality of the drink," he says.

Ortiz, however, makes a point of cautioning: “Like any other technique, when used incorrectly it can ruin the final product. It's not enough to simply mix several espressos in a carafe.”

The tool behind the trend

In practice, the barista extracts multiple shots of espresso following the same recipe. These are then rapidly cooled and stored in a single container, usually for short periods ranging from two to six hours. The batch then serves as the base for drinks such as iced lattes, iced americans, or signature cocktails.

The technique significantly reduces the preparation time of drinks and can become an ally during peak hours in coffee shops. At Casa 44, in Santos (SP), the procedure is mainly used in preparations where espresso will be combined with other ingredients. "The pre-batched espresso was implemented by the previous head barista of the house, and the reason was the practicality when preparing drinks that include espresso," comments Marcus Martins, barista of the house, citing the iced latte (espresso, milk and ice) and the Brazilian cappuccino (espresso, milk, chocolate and cinnamon).

Operational gains can be even more significant in businesses with smaller structures. Ortiz recounts that, in his coffee shop, equipped with a single-group espresso machine, adopting the technique yielded impressive results. “During the colder months, the demand for hot drinks increases, creating a bottleneck of orders at the machine,” he explains. “We noticed a gain of up to 70% in preparation speed during peak hours,” he estimates.

Another advantage of the technique is that, by working with a single batch, it also reduces variations between individual extractions – a common challenge even for well-trained teams.

Ortiz observes this improvement in beverage consistency. “Our espresso preparation has several steps, such as water spraying, WDT [technique for distributing ground coffee in the portafilter], and the addition of minerals,” he explains. “With pre-batching, I can even manage the quality of batches using a TDS [total dissolved solids] meter, taking advantage of the coffee shop's downtime and ensuring that the drinks come out perfect at peak strength,” he concludes.

For Rao, however, operational efficiency helps explain the popularization of the technique, but not its consolidation. According to him, the permanence of pre-batched espresso depends, above all, on the sensory result in the cup. If the drink compromised the consumer experience, the expert teaches, it would hardly gain space in coffee shops.

By simplifying the workflow, the technique also frees up time for activities beyond coffee extraction, such as finishing drinks, customer service, and interaction. “Imagine that before I would have to clean the portafilter, flush the machine, pour the coffee into the grinder, level and compact it with the tamper, only then being able to do an extraction of approximately 30 seconds. Pre-batched allows me to skip all these steps and simply weigh the coffee I take from a squeeze bottle,” adds Martins.

The chemistry of pre-batched

Although recent on social media, the idea of ​​working with pre-extracted coffee is not new. Henrique Ortiz recalls that rudimentary versions of the practice have been appearing in coffee shops for years. "Ten or fifteen years ago, some places kept leftover espresso shots to use in iced drinks. But it oxidized and tasted really bad; it was nicknamed 'sludge'," he says.

According to Ortiz, the difference today is precisely the technical refinement – ​​carrying out the process requires attention to detail, such as oxidation and degassing of the beverage. "We have to understand that the pre-batching tool can be very useful, but at the same time, it has limitations," warns Martins.

After extraction, the espresso begins to react with oxygen, altering volatile aromas, the perception of acidity, and sensory complexity. Furthermore, the carbon dioxide accumulated in the coffee during the roasting process also contributes to the perception of body and the formation of the espresso crema. Over time, however, these gases dissipate, reducing the texture and leaving the beverage more "flat"—a term used to describe coffees with less intensity and sensory complexity.

In pre-batching, the barista works with a beverage that has already lost a significant portion of its CO2. The result, although less vibrant, can be stable enough for applications where crema is of little importance, such as iced lattes, iced americans, or drinks whose texture is provided by other ingredients, such as milk and matcha.

Despite these chemical transformations, Rao argues that the sensory difference may be smaller than many imagine. According to him, coffee shops that use this technique usually filter the espresso before refrigerated storage. “Filtering removes the crema and some suspended solids, which makes the coffee cleaner,” explains the expert. Therefore, he believes that pre-extracted espresso usually tastes better than fresh espresso. “If you try filtering a fresh espresso through a paper filter, you will notice how the removal of some solids can make the taste cleaner,” he argues.

This helps explain why the technique appears more frequently in certain beverage categories. “In our research, we saw that those who implement the technique end up directing it towards milk-based drinks, to replace freshly pulled espresso. But we've also tested it with cold drinks and cocktails,” reports Ortiz. He cautions, however, that the absence of crema imposes limitations: “It wouldn't be possible to replace the traditional pure espressos on the menu.”

According to Rao, it's no coincidence that the technique is more prevalent in dairy-based beverages, where the differences tend to be less noticeable. "In milk, the difference compared to fresh espresso is subtle, but pre-batched espresso generally has a slightly weaker and cleaner flavor than fresh espresso," he explains.

Martins agrees that the technique makes more sense in drinks where coffee isn't the main ingredient, such as preparations with milk and ice. "In those cases, the average consumer will hardly be able to tell the difference between a fresh espresso and a pre-extracted one," he emphasizes.

To minimize these transformations, airtight storage – which reduces contact with oxygen – is essential, as is relatively quick consumption of the beverage, generally between two and six hours after extraction.

The process begins even before storage. Grinding, recipe, and extraction parameters are designed taking into account the behavior of the espresso after degassing. Instead of trying to indefinitely preserve a "perfect" espresso, the technique seeks to control recurring changes to deliver a predictable result in the cup.

Temperature is also a key variable. Rapid cooling – sometimes done in an ice bath or in thermal containers – slows down the chemical reactions that continue to occur after extraction, helping to preserve the sensory profile of the beverage. Some coffee shops even resort to slight dilutions with water to stabilize the flavor of the espresso over time, a practice inspired by cocktail making.

Besides the coffee shops

Abroad, the technique still divides opinions, especially among professionals who believe it reduces the artisanal character of espresso. For the American consultant and roasting master Scott Rao, however, the discussion is part of the natural evolution of specialty coffee. “Pre-brewed espresso won't eliminate fresh espresso or disappear. It will capture a share of the market,” he states.

Martins agrees that there is room for growth in this practice, but emphasizes that its adoption requires care. “We should always strive for a well-regulated espresso, regardless of whether it is served immediately or stored for later use,” he states. “In my opinion, the batch should be small and remade whenever necessary so that we can work with the freshest coffee possible.”

According to Ortiz, the potential of the technique can extend beyond specialty coffee shops. “Bakeries, hotels, restaurants, and other businesses where coffee isn't the main focus can benefit greatly. Pre-batched coffee can be prepared by a barista and served by other professionals, maintaining sensory quality.”

While it's still far from a consensus among purists, one thing seems clear: pre-batched espresso has moved beyond being a laboratory curiosity and is establishing itself as one of the most recent attempts to balance quality and efficiency in the contemporary coffee shop.