A coffee bean is the seed of the coffee plant. The roasted and ground seeds of the Coffea plants are used to brew coffee. The coffee cherry contains two pits with a flat side and a round side. The fruits are harvested and the cherry flesh is removed and the pits then are dried and and sold to coffee roasters.
Sometimes the coffee cherry only contains one seed. These are called peaberries, and they are sold at higher prices, as specialty coffee.
Even though they are seeds, they are referred to as ‘beans’ because of their visual resemblance to the beans from the legumes family.
The two most important varieties of coffee are Arabica and Robusta coffee. About 70% of the coffee production is Arabica, and the rest is robusta. The coffee “beans” are best when the coffee berries are picked ripe.
The unroasted beans are called green coffee beans, and they have a long shelf life, compared to the roasted ones.