A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pip inside the red or purple fruit. This fruit is often referred to as a coffee cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.
They come in different varieties and flavors, depending on where they are grown and how they are processed. Some of the most popular types of coffee beans include Arabica, Robusta, and Liberica. Coffee beans contain caffeine, which is a natural stimulant that can help improve mental alertness and focus.