6 Reasons your Coffee Tastes Bitter

Brewing coffee is quite a skillful task, a science, where practice makes perfect. There are a lot of contributing factors to a good cup of coffee, and today we bring you six reason why your coffee tastes butter, and how to fix them, enjoy.


1. Your’re using poor quality coffee

We hate to admit this, but not all coffee is created equal, some is simply better than others. We suggest steering clear of supermarket coffee and try fresh quality cafe coffee.


2. You’re using the wrong grind size

The grind of your coffee beans changes how the flavour particles dissolve – if it is too course you risk under-extraction, and sour coffee. Too fine you risk over-extracted, bitter coffee. You’ll need to experiment to get the perfect ground for your coffee beans.


3. Your water quality is poor

The taste of your coffee greatly differs depending on the quality of water you’re using in your home. Hard water or bad quality water will greatly differ the taste of you coffee. Instead of using water from your tap, we suggest purchasing a Brita water filter.


4. Your water temperature isn’t right

Coffee temperature needs to be just right to ensure the perfect cup, you’ll notice good cafes never serve scalding hot coffee – If your water is too hot you’ll extract the bitter compounds, alike if you burn toast it has an ashy aftertaste. To avoid burning your beans aim for a water temperature between 92 – 96 degrees Celsius. The use of a thermometer may also help control temperature.


5. Your extracting for too long

Extraction is the process of pulling the flavour out of the coffee, over-extraction is when you ‘express’ too much water through your coffee grounds – this is the most common reason for bitter coffee. Try adjust between longer and shorter times to find the right time for your taste. Remember, once you have extracted your shot of coffee, you should stop allowing your coffee machine to pass more water through the spent beans as after one shot the following water draws bitter compounds.


6. Your equipment isn’t clean

Surprisingly the coffee machines often gets missed in our daily cleaning routines. Old coffee residue from the last time you made coffee is lurking in there and can definitely affect the flavour of future cups. We recommend you flush your coffee machine daily with an espresso cleaner 



Steve Davis, 2011. The Spirit of Espresso. (Online) Available at http://baristador.com/ (Accessed 27 June 2016)

Anna Brones, 2014. The Kitchn. (Online) Available at http://www.thekitchn.com/ (Accessed 27 June 2016).

Jake, 2015. Fellow.  (Online) Avaliable at http://fellowproducts.com/ (Accessed 27 June 2016).

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