Coffee bean Coffee bean A coffee bean is a seed of the coffee plant and the source for coffee. It is the pit inside the red or purple fruit often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit. Even though the coffee beans are seeds, they are referred to as "beans" because of their resemblance to true beans. The fruits – coffee cherries or coffee berries – most commonly contain two stones with their flat sides together. A small percentage of cherries contain a single seed, instead of the usual two. This
Coffee State (now the Democratic Republic of the Congo) to Brussels to Java around 1900. From Java, further breeding resulted in the establishment of robusta plantations in many countries. In particular, the spread of the devastating coffee leaf rust ("Hemileia vastatrix"), to which "C. arabica" is vulnerable, hastened the uptake of the resistant robusta. "Hemileia vastatrix" is a fungal pathogen and results in light, rust-colored spots on the undersides of coffee plant leaves. "Hemileia vastatrix" grows exclusively on the leaves of coffee pants. Coffee leaf rust is found in virtually all countries that produce coffee. Mycena citricolor is another threat to