Especially in the morning, it is a dilemma for coffee drinkers: coffee that does not (anymore) taste. But how is it that the coffee suddenly tastes bitter? Where do strange in and after tastes come from? We’ll show you the common causes of bitter or bad tasting coffee.

A stale or watery coffee taste can have many causes:

Grind coffee beans properly

One possible cause of a threadbare, tasteless coffee is the lack of flavor, for example, due to too long a time between grinding and brewing. Similar to the application of perfume, the taste aroma of coffee evaporates after some time: If you grind your beans, but the coffee boils for some time afterwards, it can happen that the coffee aroma evaporates in the meantime – you should the beans so always possible, grind before brewing fresh, so as to obtain an aromatic and strong taste.

Also to loss of taste it comes with the wrong degree of grinding If the beans are coarsely ground, the water will not have enough “attack surface” to extract the aroma from the beans. Therefore, fine tune your grind and, when grinding by hand, be careful to grind the beans long enough.

Old Beans

Another cause of bland coffee taste is that the roasting process of the beans is too far back, that is, the beans are “too old”. Here it is similar, as with the grinding process: If the roasting too far back, taste and aromas can be lost in this case. If you want to roast your own coffee, of course you have the opportunity to keep the time between roasting and grinding as short as possible. Since most coffee drinkers already buy their beans roasted due to the high cost, pay attention to fresh coffee beans that are not older than a few months.

Incorrect storage of coffee

The proper storage of coffee is of great importance for the later coffee taste. If you store your coffee beans or the ground powder incorrectly, there may be a loss of taste. Be sure to keep your coffee dry and dark. Also too high temperatures are problematic, so you should keep your coffee in the optimal case at room temperature, as the storage in the refrigerator has a negative impact on the aroma of your coffee.

Tips against acidic coffee

Occasionally it may happen that between your coffee beans are individual beans that taste particularly bitter or sour. This happens because of the over-fermentation of the bean – it has fermented for too long and thereby formed more coffee acids, which we then perceive in coffee as a bitter taste. Incidentally, such inedible beans are also referred to as “stinker beans”. Unfortunately, this problem can not be completely prevented, however, bitter coffee beans occur particularly frequently at low-priced coffees from the supermarket. Look for high quality coffee beans when buying your coffee beans.

Coffee tastes like detergent or plastic

Another problem that can change the taste of your favourite drink to a negative is a taste, for example, detergent, plastic or metal. There are multiple reasons for that. It is important that you have to descale and clean your coffee machine at regular intervals. Otherwise, it can lead to impurities that affect the taste of coffee. However, it is equally important that the machine is rinsed several times with clear water after cleaning before you use it again. Without the subsequent rinsing, it quickly happens that your beloved coffee does not taste like chocolate or fruit flavors, but rather of detergent and chemicals.

If you notice that your coffee has a metallic aftertaste, it may be due to your water pipes: when they are older, rust may have settled in, which affects the taste of the coffee.