The Aeropress has become a beloved brewing method among coffee enthusiasts worldwide, known for producing smooth, flavourful coffee in under a minute. But if your Aeropress coffee isn't tasting its best, fear not! There are several common culprits behind a lacklustre cup.

Below, we look at the most frequent reasons why Aeropress coffee tastes bad and explore Aeropress brewing tips to help you achieve perfect cup after perfect cup.

Aeropress Brewing Variables and How They Affect Taste

Several key brewing variables play a crucial role in optimising Aeropress extraction and, consequently, the taste of your coffee. Here’s how these factors can impact your coffee's flavour profile:

Grind Size 

Grind size is one of the most critical factors in brewing a great cup of Aeropress coffee. If your coffee tastes bitter or overly strong, it may be because your grind is too fine. On the other hand, if your coffee tastes weak or sour, your grind may be too coarse. 


Finding the perfect grind size for your Aeropress can take some experimentation, but a good starting point is a medium-fine grind, similar to table salt. Adjust from there based on your taste preferences and the specific coffee beans you're using.

Water Temperature 

Hot coffee doesn't always mean good coffee! If your water is too hot, it can extract unwanted compounds from the coffee, resulting in a bitter or burnt taste. However, if your water is too cool, it may not extract enough flavour from the beans, leading to a weak or underdeveloped cup. 

The ideal water temperature for Aeropress brewing is 85-95°C (185-205°F). Use a thermometer to ensure you're hitting this range, or let your boiling water cool for about 30 seconds before brewing.

Coffee Quality

The quality of your coffee beans can also significantly impact the taste of your Aeropress brew. Stale, low-quality, or improperly stored beans can produce a range of unpleasant flavours, from flat and lifeless to rancid and sour. 


To get the best results from your Aeropress, start with freshly roasted, high-quality beans from a reputable source. Look for beans that have been roasted within the past few weeks and store them in airtight containers, like those from Airscape, in a cool, dark place.

Coffee Dose

How much coffee you use will also influence the strength and flavour of your brew. A good starting point is 1-2 tablespoons of coffee grounds for every 200ml (6.7oz) of water. Naturally, adjust this based on your taste preference.

Steep Time 

The amount of time you allow your coffee to steep in the Aeropress can also affect the final flavour. If you brew for too long, you may over-extract the coffee, resulting in a bitter or astringent taste. 

On the other hand, if you don't brew long enough, your coffee may taste weak or underdeveloped. A good starting point for Aeropress brew time is 1-1.5 minutes, but you can adjust this based on your preferences and the specific recipe you're using.

Brew Method 

There are several different methods for brewing with an Aeropress, each of which can produce a slightly different flavour profile. The two most common methods are the standard and inverted techniques: 

  • The standard method involves placing the Aeropress on top of your mug and adding water to the chamber. 
  • The inverted method involves starting with the Aeropress upside down and flipping it onto your mug after adding the water. 

Experiment with both methods to see which one produces the best results for your taste preferences.

Cleaning and Maintenance

Finally, don't underestimate the importance of keeping your Aeropress clean and well-maintained. Coffee oils and residue can build up on the device over time, affecting the taste of your brew. 


Make sure to rinse your Aeropress thoroughly after each use and periodically deep clean it with a specialised cleaner or a mixture of water and vinegar. Replace the rubber seal and filter cap as needed to ensure optimal performance.

Fine-tuning Your Aeropress Coffee for Better Flavour

Once you've identified the potential issue behind your AeroPress coffee tasting bad, try these Aeropress coffee hacks to help you achieve better results:

  • Invest in a burr coffee grinder - A consistent grind is essential for even extraction. Pre-ground coffee often results in uneven particle sizes, leading to an inconsistent brew. Consider investing in a burr grinder for optimal control over your grind size.
  • Freshly roasted coffee beans - Freshness is key! Using stale coffee beans can lead to a dull and muted cup. Opt for freshly roasted coffee beans to enhance the Aeropress flavour and aroma.
  • Experiment with coffee-to-water ratio - Don't be afraid to experiment with different coffee-to-water ratios to find your sweet spot. Start with a 1:16 ratio (coffee to water) and adjust based on your taste preference.
  • Water quality - The quality of your water can also impact the taste of your coffee. Does your Aeropress coffee taste metallic? This could be a sign of mineral buildup in your kettle. Consider using filtered water for brewing.

Achieving Aeropress Coffee Perfection

Perfecting your Aeropress brew requires attention to several key variables, from grind size and water temperature to brewing time and method. By understanding these factors and making minor adjustments to your Aeropress coffee technique, you can significantly improve your brew’s flavour and avoid the disappointment of a bad-tasting cup. 


Remember, the key to Aeropress success is experimentation and finding the perfect combination of variables that work for your taste preferences and the specific beans you're using.

Rave Coffee: Your One-Stop Shop for All Things Aeropress

At Rave Coffee, we’re passionate about helping you brew the perfect cup of coffee, no matter your chosen method. We offer a wide variety of freshly roasted, high-quality coffee beans that are perfect for Aeropress brewing. 

Additionally, we stock a range of Aeropress coffee equipment, including the Aeropress itself, replacement filters, and even Aeropress gift sets that make fantastic presents for coffee lovers. Browse our selection today and discover everything you need to elevate your Aeropress coffee experience. 

Buy coffee beans online today with RAVE Coffee.

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