Why is black coffee bitter?

Coffee beans contain a small amount of bitter ingredients. Caramelization and carbonization of fiber caused by sugar, partial starch and baking degrade the bitterness of black coffee.

Black coffee is coffee without any modification, unlike other coffees with sugar added, so black coffee is more original and bitter.

Black coffee also has a sour taste. Proper heating will produce moderate acidity, which will make coffee taste better and make people feel deeper. The sweetness of black coffee is closely related to the bitterness, so refreshing and superior black coffee tastes sweet.

Coffee beans have different characteristics due to different producing areas, some of which are darker in color, higher in baking degree and stronger in taste; Some are lighter in color and slightly lighter in taste.

Extended data

In addition to the degree of roasting, in the process of coffee extraction, the length of time, water temperature and pressure are all important factors to determine whether the taste is bitter or not.

1, length of time. It takes some time to extract delicious coffee. If the extraction time is too long, the mixing time of water and powder will be correspondingly prolonged, resulting in more substances extracted from coffee, more bitter taste and more miscellaneous flavor.

2. The water temperature fluctuates. The optimum extraction temperature of coffee is between 85℃ and 93℃, which will lead to excessive or insufficient coffee extraction. If extracted with overheated water, the final coffee may be extremely bitter. Try to lower the water temperature, and you may find your coffee tastes better.

3. The extraction is uneven. If the acidity in coffee is not well extracted when making coffee, it may also cause coffee to become bitter. If there is proper acidity, coffee will have a good sense of balance, rather than simply expressing bitterness.

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