The first drop should not shoot out immediately, but slowly emerge dark and thick from the spout. This is often how you can tell whether you can correctly pull your espresso in the portafilter. A good shot is no coincidence, but it is also not a science that requires a professional bar: fresh beans, cleanly prepared coffee grounds, and small adjustments to the grind size will get you very far.
This is especially true for strong Italian roasts. They deliver the full body, dense crema, and chocolatey-spicy notes that many associate with espresso from a bar. For them to show what they have in store in your machine, the coffee, basket, and technique must match.
What really matters when pulling espresso
An espresso is created when hot water flows under pressure through finely ground coffee. This sounds simple, but even a minimal change in the grind size significantly affects the flow time. If water flows through too quickly, it takes in too little flavor. If it flows too slowly, it extracts too many bitter compounds.
For a classic double espresso, a good starting point is: 18 grams of coffee grounds in the double basket, around 36 grams of espresso in the cup, and a pull time of about 25 to 30 seconds. These numbers are not rigid rules. Depending on the bean, roast, machine, basket size, and personal taste, the result may vary.
More important than a perfect number is the balance in the cup. The espresso should taste slightly sweet and aromatic, have a pleasant bitterness, and not taste sour, thin, or burnt. The scale is your most reliable tool in this regard: It shows you what is actually happening, instead of forcing you to rely solely on crema and intuition.
Pulling espresso in the portafilter correctly: Preparation
Before the coffee goes into the basket, the machine needs to reach temperature. Switch it on in good time and give it enough time to heat up. On many household machines, the first few hot minutes are not enough because the brew group and portafilter are still significantly cooler than the water in the boiler.
Lock the empty portafilter in so that it warms up. Just before pulling the shot, let some water flow through the brew group. This rinses away coffee residue and stabilizes the temperature. Then wipe the basket completely dry. Even a few drops of water can cause the coffee grounds to clump and extract unevenly.
The cup also deserves attention. A cold, thick-walled cup quickly takes the warmth and character out of the small espresso. Place it on the cup warmer or preheat it with hot water.
Fresh beans and the right grind size
Buy coffee beans in a quantity that you can consume within a few weeks, and store them airtight, in the dark, and at room temperature. The refrigerator is usually not a good idea: temperature fluctuations and foreign odors damage the aroma. Only grind the beans immediately before pulling the shot.
For espresso, the grind size must be fine, but not automatically at its finest. Coffee grounds that are almost like powder often slow down the water too much. If they are too coarse, however, the shot will run light and fast into the cup. As a guideline, the coffee should hold together slightly after grinding, but still be easy to distribute.
Adjust the grinder in small steps. On many espresso grinders, even a small correction corresponds to several seconds more or less pull time. Always change only one variable at a time: first the grind size, then, if necessary, the dose or the ratio of coffee to beverage volume.
Dosing, distributing, tamping
Weigh the coffee grounds directly in the portafilter. For many double baskets, 17 to 19 grams is a sensible range, but check the recommendation of your basket. If it is too full, the coffee puck may stand up against the shower screen. If it is too empty, it will lack the necessary resistance for an even extraction.
After grinding, the powder should lie as level as possible in the basket. Do not tap the portafilter forcefully, as this can create air pockets and compacted areas. Instead, gently distribute the coffee grounds with a distribution tool or a short, controlled shake. Especially with grinders that create a lot of static charge, a fine WDT tool can help break up clumps.
Then comes tamping. Place the tamper straight and press down with even pressure until the coffee bed is level and stable. You do not need to work with excessive force. The key is that the puck is level. An uneven tamp easily leads to channeling: The water finds individual fast paths through the coffee, while other areas are barely extracted.
Wipe loose coffee residue from the rim of the basket and lock the portafilter in quickly. Do not wait long after tamping. Otherwise, the coffee grounds will begin to absorb moisture and heat from the environment, making the pull less reproducible.
Observing the pull instead of just waiting
Start the machine and place a scale under the cup. With a bottomless portafilter, you can see particularly well how the pull develops. After the pre-infusion phase, individual drops should initially form, which then come together into thin, even streams. The color will get lighter over time - this is normal.
Stop the pull at your target weight, not only when the cup looks full. With 18 grams of coffee, 36 grams of espresso is a classic 1:2 ratio. For a slightly more intense, fuller shot, you can stop earlier, at about 30 to 33 grams. For a longer espresso, it can be more, provided it does not become thin and bitter.
Tasting is more important than the clock. A shot with 26 seconds can be excellent, while another with the same time is unbalanced. Briefly note the dose, beverage volume, time, and impression for new beans. This way, you will find your favorite pull much faster again.
If the espresso does not taste right
If the espresso tastes sour, watery, or noticeably thin, the extraction was often too short. The pull probably ran too fast or the water volume was too high. Set the grinder a little finer and check whether you really have enough coffee in the basket.
If it tastes dry, harshly bitter, or burnt, the extraction was usually too long. The grind size is then often too fine, or the pull was stopped too late. Set it a little coarser and initially keep the dose and target volume the same. This way, you can clearly see whether the change helped.
If the coffee squirts out to the side of a bottomless portafilter or light, uneven areas form, this points to channeling. In this case, the cause is often uneven distribution, clumps, or an uneven tamp. Work more carefully on the distribution, but do not simply increase the tamping pressure.
A very light crema that disappears quickly can also be due to old beans. Conversely, a lot of crema alone is not proof of quality: Some roasts and blends form particularly much of it, even though the taste is not balanced. What matters remains what you taste in the cup.
Adjusting Italian beans correctly
Darker Italian roasts often need a different pull than very light specialty coffees. They usually develop their typical fullness well with a classic 1:2 ratio and a rather moderate temperature. If your machine is adjustable, a brewing temperature that is too high can make dark roasts unnecessarily bitter.
Blends with a Robusta content often bring more crema, body, and spice. They pair perfectly with pure espresso, cappuccino, and latte macchiato. Arabica-focused blends, on the other hand, often taste finer, nuttier, or fruitier. There is no right or wrong here: Someone looking for a strong espresso for milk drinks will set it differently than someone who wants to perceive every nuance of a pure espresso.
If you change the bean brand or open a new package, do not automatically start with the old settings. Even a different roast or a different age of the beans often requires a small correction. At Baristacoffeeshop, you will find Italian coffees from different brands and strengths - if in doubt, it is best to initially order smaller quantities or a set and compare in peace what suits your machine and your taste.
Cleaning is part of a good pull
A clean portafilter makes every espresso better. Tap the puck out immediately after the pull, rinse the basket and portafilter briefly, and dry them. After the last coffee of the day, you should also rinse the brew group with water. Otherwise, coffee oils accumulate and give the next espresso a rancid, bitter aftertaste.
The shower screen, basket inserts, and spout need a more thorough cleaning with a suitable coffee oil remover regularly. For machines with a backflush valve, backflushing is also part of the maintenance plan. How often depends on how many pulls you make daily. For several espressos a day, a weekly cleaning of the brew group is sensible.
If your espresso suddenly tastes flat or runs unevenly despite a clean working method, also check the water and grinder. Strongly calcified water affects the taste and the machine, while old coffee residue in the grinder can aromatically distort new beans.
The best way to consistently good espresso is simply: Start with a clear setting, always change only one value, and consciously experiment. After a few pulls, you will know how your beans react - and out of a small routine comes exactly the espresso you look forward to in the morning.