Coffee beans refer to the fruits of plants used to make coffee. Broadly speaking, there are two kinds of coffee beans in the world, Arabica beans and Robusta beans. The fruit of coffee consists of two oval seeds. One side connected to each other is a flat joint, called lentil. But there is also a round seed called round bean, which has no different taste.
The viscosity of coffee powder will increase after it is wetted, which will block the grinder of coffee machine and cause adverse effects on the machine. Once the coffee beans are wet, they are easy to deteriorate and mold, which greatly shortens the shelf life, and is harmful to health and affects the taste of coffee drinks.