Coffee bean
Seed of the Coffea plant, source of coffee.
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. Coffee beans consist mostly of endosperm, like Brazil nuts and white rice. As coffee is one of the world's most widely consumed beverages, coffee beans are a major cash crop and an important export product, accounting for over 50% of some developing nations' foreign exchange earnings.
- field
- Agriculture, beverage production
- known_for
- Source of coffee, major cash crop
- largest_producer_2023
- Brazil
- main_exporters
- Brazil, Colombia, Vietnam, Ethiopia
- caffeine_content_arabica
- 0.8–1.4%
- caffeine_content_robusta
- 1.7–4.0%
Lore & Background
According to legend, the coffee plant was discovered in Ethiopia by a goat herder named Kaldi around 850 AD, who observed increased physical activity in his goats after they consumed coffee beans. 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. Coffee trees range from 5 to 10 m in height and originally grew naturally in African forests. The coffee beans are in the seeds of fruits from trees and shrubs. Humans produce coffee by roasting, grinding and brewing the raw (green) coffee 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. Coffee plants grow within a defined area between the tropics of Cancer and Capricorn, termed the bean belt or coffee belt. The Oxford English Dictionary suggests that the European languages generally appear to have adopted the name from Turkish kahveh, about 1600, perhaps through Italian caffè. Another common theory is that the name derives from Kaffa Province, Ethiopia, where the species may have originated.
Reader's Guide
Coffee beans are central to global trade and culture, serving as the raw material for one of the most widely consumed beverages worldwide. The two main commercial species, arabica and robusta, differ significantly in caffeine content and growing conditions, with arabica requiring cooler temperatures and robusta tolerating warmer climates. The processing of coffee beans—either wet or dry—affects the final flavor, and niche products like kopi luwak, produced via digestion by the Asian palm civet, command high prices. The economic importance of coffee is profound: it accounts for over 50% of some developing nations' foreign exchange earnings, and Brazil alone produces about 45% of the world's total coffee exports. Despite claims about peaberries having superior flavor, evidence remains inconclusive. The history of coffee cultivation spans from legendary origins in Ethiopia to global spread across the bean belt, with first cultivation in Europe in 1616 and in South America in 1730. Coffee beans contain non-volatile compounds like caffeine and trigonelline, which contribute to flavor and biological effects, and green coffee extract has been studied for weight-loss properties. The legacy of coffee beans lies in their role as a major cash crop, a daily ritual for billions, and a subject of ongoing agricultural and scientific interest.
Did You Know?
- Coffee beans are not true beans; they are seeds from the Coffea plant.
- Peaberries, which contain a single seed, make up about 10% to 15% of all coffee beans.
- Arabica beans contain 0.8–1.4% caffeine, while robusta beans contain 1.7–4.0% caffeine.
- The name 'coffee' may derive from Kaffa Province, Ethiopia, where the species may have originated.
Frequently Asked Questions
What is a coffee bean?
A coffee bean is the seed of the Coffea plant, found inside a fruit commonly called a coffee cherry. It is the raw material from which all brewed coffee is ultimately made.
Why are coffee seeds called 'beans' when they aren't true beans?
The name comes purely from their visual resemblance to actual beans in shape and size. Botanically, they are seeds made up mostly of endosperm tissue, similar to Brazil nuts or white rice.
How many seeds does a typical coffee cherry contain?
Most coffee cherries hold two seeds pressed flat-side to flat-side, unlike a true cherry which usually has just one pit. Occasionally a cherry produces a single, round seed known as a peaberry.
How does caffeine content differ between Arabica and Robusta beans?
Arabica beans typically carry between 0.8% and 1.4% caffeine, while Robusta beans pack a much higher 1.7% to 4.0%. This is one reason Robusta-based espresso shots taste noticeably stronger and more bitter.
Which country produces the most coffee beans?
Brazil leads global production, followed by major exporters like Colombia, Vietnam, and Ethiopia. The crop is a critical cash export for many developing nations, making up over half of their agricultural revenue in some cases.
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