How to distinguish the taste of coffee?

A good cup of coffee should be clear, bright and transparent. The concentration is different from turbidity. Generally speaking, the causes of turbidity are nothing more than the following: bad roasted coffee beans or powdered coffee beans are overbrewed for too long (the brewing temperature is too high, the brewing time is too long, and the way of flushing is too fast.)

When you put the coffee spoon into the good coffee, the light of the coffee spoon will sparkle, and then scoop up a spoon and go back, you will find that at the moment of dripping, the coffee liquid will form a jewel-like bead across the surface, which can be called a cup of moist and transparent coffee.