My espresso is "watery"

What distinguishes a delightful espresso from a "watery" and flavorless one?

A properly extracted espresso should have an intense aroma, rich flavor, robust body, and a pleasant aftertaste. It shouldn’t be bitter (a sign of over-extraction) or sour (a sign of under-extraction), but its organoleptic elements and flavor notes should be evident from the very first sip.

When we talk about "watery" espresso, we mean an espresso that lacks aroma and flavor and gives a diluted sensation when tasted. Practically, this means our coffee was not extracted properly, as the hot water passing through the grounds failed to release the aromas and flavors as it should. While this can be due to several reasons, the main one is the extraction time, which may be shortened due to incorrect grinding or tamping.

Let’s examine each factor that can lead to a weak, watery espresso individually so we can effectively correct our extractions!

Why does my espresso turn out "watery"?

• Incorrect Grinding: The correct grind is a key factor for a good espresso. If we grind coarser than necessary, the water will pass through the coffee too quickly, resulting in an under-extracted shot with weak flavor. Ideally, an extraction should usually last between 25–28 seconds. If we notice our coffee is extracted in less time, we should adjust the grind to be a little finer. Grinding is a factor that requires experimentation and continuous testing to find the ideal combination of blend, grind, and machine.

• Incorrect Dose: Even if our coffee is ground correctly, if the amount we use is less than recommended, we’ll end up with the same result. With doses ranging from 14 to 21 grams, experimentation is needed here too, gradually increasing our dose by 0.5 grams and noting the results.

• Incorrect Tamping / Distribution: After placing the ground coffee in the portafilter basket, it must be evenly distributed across the surface and tamped. These steps ensure the water passes through the coffee evenly under pressure, extracting it properly and fully. If the coffee isn’t distributed or tamped correctly, the water will find the path of least resistance—a phenomenon called channeling—resulting in watery, weak coffee.

• Incorrect Temperature: If the water passes through the coffee grounds at a lower temperature than necessary, it’s clear that the aromas and flavors won’t be extracted to their fullest. The correct extraction temperature is essential for successful extraction and for avoiding a "watery" espresso.

• Problem with the machine: We have experimented and corrected all the above factors, but the problem persists? It’s time to take a look at our espresso machine—not by ourselves, but by a specialized technician who services machines. Before that, however, we should thoroughly clean and descale the machine, especially if it’s been a while since we last did so.

You can visit our equipment section to discover caring and cleaning products as well as grinders at EQUIPMENT | HouseBaristas