The basic taste of coffee is: sour, bitter and sweet. Sour taste is a basic taste of coffee, caused by organic fruit acid, citric acid, malic acid and so on.
Followed by the bitter taste of caffeine, quinine and a different alkaloid coffee taste, this is another basic taste of coffee, good coffee has a certain degree of bitterness.
The one way exhaust valve reviews the third aspect of coffee based on the taste. The first is a strong feeling. After the coffee is drunk, some are very strong. The whole mouth has a full sense of the mouth, and the long time table will disappear. This is a kind of superior coffee. Some coffee drinks like a cup of clear water, a touch of light, without any feeling, lost the rich fragrance of coffee. The other taste of coffee is astringency, which is a special aftertaste that makes the mouth feel dry. People don't like it
One way valve believes that drinking coffee should be like tasting wine, first smell the aroma, and then try a small bite, that you can taste the essence of it.