Coffee bean

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A coffee bean is a seed from the Coffea plant and the source for coffee. This fruit is often referred to as a coffee cherry, but unlike the cherry, which usually contains a single pit, it most commonly contains two seeds with their flat sides together. The seeds are referred to as beans because of their appearance, though they are not true beans. A few coffee cherries, referred to as "peaberries" contain a single seed; they make up around 10% to 15% of all coffee beans. It is often claimed that peaberries are superior to normal beans, but there is little hard evidence to support this. Like Brazil nuts (a seed) and white rice, coffee beans consist mostly of endosperm. The two most economically important varieties of coffee plants are the arabica and the robusta, accounting for approximately 60% and 40% of the coffee produced worldwide, respectively. Arabica beans contain 0.8–1.4% caffeine and robusta beans contain 1.7–4.0% caffeine. As coffee is one of the world's most widely consumed beverages...

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