Time In Espresso Extract –Espresso Extraction

Vietnamese Coffee Exporter
Time In Espresso Extract –Espresso Extraction
Time In Espresso Extract: The Espresso technique has the most negligible impact on the variable of Time. This factor is measured in seconds, beginning with the start of the pump and ending with the stop of the pump. Although the word “espresso” originally meant “to show off,” the capacity to be “fast” is what makes this coffee renowned.
Coffee was first prepared with devices that took less than a minute to brew in the nineteenth century. Today’s espresso machines take roughly 30 seconds to extract all of the flavors from a cup of coffee, so have you ever questioned why 22, 30, or 40 seconds?

An overview of the extraction process


There are two distinct challenges in terms of Time that we must analyze individually. The first is about the components in coffee that can be dissolved by water. Because each element (sugars, acids, phenols, fats, and so on) requires a different length of time to dissolve in water, these processes are entirely based on contact time, which you can determine. More explicitly in the extraction fundamentals.

Time In Espresso Extract –Espresso Extraction

The second issue is how the water accomplishes the procedure above, specifically how water quickly penetrates the coffee mass or is hampered. This is the content that we will get into more deeply.

Notes on how long it takes to extract the espresso

The water will wash away until nothing is left in the coffee that can be dissolved under the “extreme” pressure and temperatures provided by the espresso machine. Most espresso in today’s coffee shops is extracted between 22 and 40 seconds. In addition, most current devices are set to run for between 25 and 32 seconds.

If extracted too rapidly, espresso tends to be lighter (lighter body) and more acidic, with a fresher fruity flavor (if the coffee is good). Espresso that is extracted more slowly has a more substantial (heavier) flavor that can be harsh and smokey in taste (smoke). This isn’t a hard and fast rule, but it does apply to most coffees.

If extracted too rapidly, espresso tends to be lighter (lighter body) and more acidic, with a fresher fruity flavor (if the coffee is good). Espresso that is extracted more slowly has a more substantial (heavier) flavor that can be harsh and smokey in taste (smoke). This isn’t a hard and fast rule, but it does apply to most coffees.

Factors that influence the extraction time (brew time)


If we turn Espresso’s quality into a rate function, we get F(grade) = ax*by*cz*… The phase temperature must be included in the measurement variables (x,y,z, etc.). Processing, fineness, pressure… … many other difficult-to-measure elements such as the machine’s quality, the coffee’s quality, the barista’s technical operations, and so on.

Time In Espresso Extract –Espresso Extraction

Because all of the above factors interact with one another, the influence of one variable on the other variables in the above quality function cannot be separated. So, after turning every other tweakable element, Time might be the final thing you should do if you have to tweak one of them.

After all, “consistent” is always the first criterion, regardless of what equipment, recipe, or technique you use. Make 100 cups of coffee, which are equally horrible or equally good.

Size of the grind

Consider the following scenario: you have two glass tubes. One is filled with pebbles, while the other is filled with sand. Ice-filled pipes will allow water to flow far more quickly than sand-filled pipes when you pump water through pipes.

This effect is similar to the espresso grind size. The stream will be slower the more minor the grind size (OK). The stream will be faster if the grinding size is more significant (coarse).

As a result, fine-tune the grind size to get the desired extraction time before you start brewing. The technical criteria for grinding espresso coffee will assist you in mastering this component.

The espresso machine pumps pressure and flow

The pressure on most current espresso machines is adjusted to 9 bar. If you use a formidable machine, such as a Single Boiler (pressure and temperature fluctuate frequently), your Espresso will flow more slowly if the pressure is reduced. In terms of water flow, most espresso machines have a capacity of 250 to 500ml/30 seconds.

You may require more Time to extract using machines with lower flows than those listed above, and quantifying flavor change will be more challenging.



The filter funnels contain the coffee while allowing the pressurized water from the pump to pass through. The filter funnel, like a basket, has a very narrow pore system, and the higher the TOA pore area, the faster the extract will flow. Because the filter funnels are changeable and readily accessible on the market, relying on this accessory will considerably impact the Time to extract Espresso.

As can be seen, the key to mastering the extraction time is not as complicated as the pump pressure or the filter funnel; instead, the grind size of the coffee beans is crucial.

Portafilter Baskets – Espresso Machine Filter Overview may be found here.
Effect on extraction time that isn’t direct
Let’s return to the coffee grind size discussion with this example. You’re brewing 20g of coffee with one hand and pulling out a 40ml shot in the goddamned 25 seconds. The outcome is a thin, pale, and bitterly acidic slurry in the cup. With a low extraction concentration, this espresso is too weak. We’ll use two options to get out of this problem (assuming you work well with all cases):

Case 1: Extend the extraction time by changing the dispensing ratio

If you think you can get around this by adjusting the extraction volume, you’re playing with fire. It’s the same as “touching” the “source code” of Espresso. The composition and ratio of soluble chemicals in the coffee will change if you extract more or less than 10-20ml, resulting in a change in the extraction ratio.

It’s difficult, but it’s doable with espresso machines that can tailor the water flow and give you a lot of control over the espresso ratio – but changing the balance, not simply the extraction time, is the key.

Case 2: Changing the coffee grind size

However, when using a finer grind, the coffee in the basket will be “tighter.” As the water passes through the dense powder layer, it will pull more components into the cup, extending the extraction period by a few seconds while increasing the extract concentration. In the end, you’ll get an espresso with well-balanced flavors and significantly improved acidity.

That’s why, in addition to investing in new espresso machines and working on dose standardization, going, and tamping, baristas think about their options and aren’t afraid to spend a lot of money on a coffee grinder. While simultaneously learning to fine-tune the fineness to a tenth of a millimeter and keeping consistency… This ensures that the coffee layer is free of faults when the portafilter is inserted into the Grouhead and extracted.    

Every grinder has its own set of adjustments, but you’ll quickly discover which ones you’ll need to slow a shot down by 2 seconds or speed it up by 5 seconds.

You’ll need to modify the grind if your espresso is too fast or too slow. You’ll need to remove the previous grinds once you’ve adjusted the grind. In the chute and burr chamber of every grinder, there is some coffee. There may be 90g of coffee in there that needs to be removed in some circumstances.

Don’t be stingy with the amount of coffee you throw away. 100g may seem wasteful in the case of a Mazzer Robur, but the time and coffee you’ll save by not chasing your tail are far more valuable. ‘First In First Out’ does not apply to grinds traveling through a grinder. This implies that, while some of your new grind settings is exiting the chute, the former grind setting is still present.

Purging a grinder is similar to changing the temperature in my shower, in my opinion. If I turn up the hot water faucet and don’t notice a difference right away, it’s because the hotter water is still traveling through the pipes.

If I get impatient and increase the volume, I’ll almost certainly burn myself by going too far. Then there’s another adjustment to make, which will take much longer. Treat grinders the same way; be liberal with your purging and you’ll waste less coffee over time.

Time In Espresso Extract –Espresso Extraction

You must also check the dose following a grind change with timed grinders. You can change the grind to change the amount of coffee the grinder can ground each second. To prevent being taken off guard, keep a lookout for a dose adjustment shortly afterward.

Keeping your hopper full can help you stay on schedule. The weight of beans on the burrs decreases as the amount of coffee in the hopper decreases. Even though the grind and dose are the same, this will make your shots go significantly faster in some grinders.

To keep track of time, never vary your dose. Yes, a higher dose will slow a shot down, and a lower amount will speed one up, but it will also throw out all of your other options. Stick to the schedule: dose first, yield second, and time third.

Now comes the difficult part.

A finer grind does not automatically yield more coffee. A finer grind will eventually restrict the flow of water through the grinds to the point where extraction and strength suffer. This is known as micro-channeling,’ where superfine coffee clumps gather together and remain dry throughout the extraction.

It will take longer and longer to attain your desired yield as you grind finer and finer. This will result in greater extraction and strength for a while. You’ll eventually reach a stage where your extraction and strength are both decreasing. For espresso grind size, it’s like a law of decreasing returns. It’s dubbed ‘anti-logic’ by the baristas at St Ali.


  • www.espressoschool.com.au/ Filter Basket Sizes Explained
  • www. clivecoffee.com/  Portafilter Baskets – Do They Matter?
  • www. clivecoffee.com/ Bottomless Portafilters: Why & How?
  • www.javapresse.com/ The Quick Guide To Espresso Machine Portafilter Types
  • www.majestycoffeeschool.com/ What is a portafilter? here’s everything you need to know

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