Stewing is the most important part of hand-brewed coffee.

Stewing is the most important part of hand-brewed coffee, and the steaming time is directly related to the taste of a whole cup of coffee. Generally speaking, the steaming time of light roasted coffee should be extended to 30-40 seconds, the steaming time of moderately roasted coffee is 20-30 seconds, and the steaming time of medium-deep roasting is 10-20 seconds. The finer the grinding, the steaming time should also be shortened so that the water-soluble substances in the coffee can be extracted more easily.