How Coffee is Brewed

Coffee must be ground before it is brewed. Grounding usually takes place inside a coffee machine, but you can also buy ground coffee in shops. The simplest brewing process is pouring boiling water over a filter of ground coffee and letting it flow into a pot. Coffee is often made by using simple machines that force hot water through a pad of pressed coffee. Espresso machines press hot water through ground coffee.

Instant coffee is made by pouring hot water over powdery coffee. It dissolves at once, and you do not need a special machine.

Coffee brewed in an espresso machine