TLDR: A good espresso at home comes down to four factors: the right beans, a fine and consistent grind, the correct dosage with firm tamping, and an extraction time of 25 to 30 seconds. For espresso, it's best to choose a coffee with a higher coffee intensity and a full body, such as Full Force or Bold Move. If the extraction is too fast (less than 20 seconds), grind finer; if it takes longer than 35 seconds, grind coarser. The most common mistake is not the bean, but an incorrect grind size or a dirty machine.
Making espresso seems simple at first glance: put in beans, press a button, done. In practice, espresso is the brewing method most sensitive to minor deviations. Where filter coffee has a wide margin of error due to its long, gentle extraction, espresso works with an extraction time of only 25 to 30 seconds under high pressure. A small difference in grind size, dosage, or tamper pressure has an immediate noticeable effect on the taste.
In this blog, we'll walk you through step by step what you need to make a good espresso at home, which coffee is best suited for it, and which mistakes most often lead to a disappointing cup.
What do you need for espresso at home?
For espresso, you essentially need three things: an espresso machine or automatic coffee maker that can operate with sufficient pressure (around 9 bar), a grinder that can grind fine enough, and a scale to accurately control your dosage. A tamper is needed if you are working with a manual machine; automatic machines handle this part for you.
A good scale is often underestimated but is actually the most underutilized tool for home espresso. While you can get a decent cup of filter coffee by feel, espresso is so sensitive to small differences that "dosing by eye" quickly leads to inconsistent results between one cup and the next.
Which coffee do you choose for espresso?
Espresso requires beans that can withstand a short, intensive extraction without becoming predominantly bitter. Within the Bunafide assortment, Full Force is specifically developed for this: a dark roast with 50% Arabica and 50% Robusta, with a coffee intensity of 5 out of 5, the highest in the assortment. The combination with Robusta also ensures a richer crema, something that is often harder to achieve with pure Arabica espressos.
Bold Move (coffee intensity 4.5/5, dark roast, 100% Arabica) is a good alternative with a slightly milder finish than Full Force, but still enough body and character not to disappear under the pressure of the espresso machine.
If you prefer something more floral without losing the classic, heavy dark-roast flavor, then Hyper Charge (coffee intensity 4/5) is worth considering: this blend of five origins is explicitly designed to perform under pressure in espresso, while remaining balanced as a lungo.
For espresso, avoid coffees with low intensity, such as Straight Up or Daily Grind (both 2/5). This doesn't mean it's technically impossible, but the flavor is less well expressed during the short, powerful extraction of espresso than with filter coffee, for which these beans are intended.
Setting the correct grind size
Espresso requires a fine grind, comparable to table salt or finer. This is the most underestimated factor in a disappointing home espresso: many people attribute a bad espresso to the beans, while the cause is more often in the grind size.
If the grind is too coarse, the water will pass through the coffee too quickly. The extraction time will be too short, resulting in a thin, sour espresso that is underextracted. If the grind is too fine, the water will flow too slowly through the coffee, leading to a bitter, overextracted taste and, in the worst case, a clogged machine.
If you have a grinder with adjustable grind size, change it in small increments and taste each time. A large jump in grind size can make the difference between a good and a completely failed espresso.
Dosing and tamping: why this is just as important as the bean
For a standard single espresso, a dosage of 7 to 9 grams of ground coffee is generally used; for a double espresso, 14 to 18 grams. This varies per machine and per portafilter, but consistency is more important here than the exact number: always use the same amount, so you can reliably adjust other variables (grind size, extraction time).
After dosing, the coffee is tamped: pressed evenly and firmly into the portafilter. Unevenly distributed or too loosely tamped coffee causes the water to seek the path of least resistance, leading to some parts of the coffee being over-extracted and others under-extracted. The result is an uneven, often bitter-sour taste, even if the grind size and dosage were correct.
Extraction time: the 25 to 30 second rule
A good espresso flows in 25 to 30 seconds from the moment the water hits the coffee until the end of the shot. This is the most direct way to check if your grind size is correct:
- If the espresso runs through in less than 20 seconds: the grind is too coarse, set the grinder finer
- If it takes longer than 35 seconds: the grind is too fine, set the grinder coarser
- Between 25 and 30 seconds, with an even, hazelnut-brown crema: the setting is correct
This rule of thumb works best in combination with tasting. An espresso that falls exactly within the time limit, but still tastes bitter or sour, often indicates another problem, such as an old bean or a dirty machine.
Common mistakes and how to identify them
The most common mistake with home espresso is not the coffee itself, but an incorrect grind size combined with too low or too high a dosage. Other common causes of a disappointing espresso are old, oxidized beans (coffee left open for longer than two to three weeks after roasting loses aroma and body), uneven tamping, and a dirty machine where old coffee residues affect the taste of every new shot.
If you're unsure whether it's the bean or your technique, first brew the same coffee as filter coffee. If it tastes good, the problem is likely in the espresso preparation itself: grind size, dosage, or tamper pressure. Also, see our explanation of the difference between filter coffee and espresso for the technical background of these two methods.
Maintenance of your machine affects the taste
An espresso machine or automatic coffee maker that is not cleaned regularly builds up coffee oil and residues in the brew group and water reservoir. These residues become rancid and affect the taste of every subsequent shot, regardless of how good the beans or settings are. Rinse the portafilter after each use, descale the machine according to the manufacturer's instructions, and regularly clean the brew group of an automatic machine with a suitable cleaning agent.
This is also why an espresso that used to taste good suddenly disappoints after a few months without any changes to the beans or settings: the buildup of residues in the machine itself is often the silent cause.
Frequently Asked Questions
Can I make a good espresso with an inexpensive automatic machine?
Yes, provided the machine can build up sufficient pressure (around 9 bar) and the built-in grinder can grind fine enough. The quality of the coffee and regular maintenance often make more difference than the price segment of the machine.
Why does my espresso run through too quickly, even though I haven't changed the grind?
Beans that have been open longer lose oil and gases, causing them to react differently to the same grind size. Fresh beans (within two to three weeks after roasting) give a more consistent result.
Is Full Force also suitable if I prefer a milder espresso?
Full Force is deliberately developed for an intense, full flavor. If you want something milder without losing the espresso characteristics, choose Bold Move or Hyper Charge, both of which are still suitable for espresso but with a slightly less pronounced intensity.
