What You Should Know About Coffee Beans

Ever wondered how those rich, aromatic coffee beans in your cup began their journey? Before they arrive roasted and ground on your kitchen counter, coffee beans travel thousands of miles—from tropical farms near the equator, through processing mills, shipping containers, and roasteries—before becoming the brew you love.

Coffee beans grow in over 60 countries, with Brazil producing about 30% of the world’s supply, followed by Central and South America (together ~60%), Africa and Arabia (~30%), and Asia and Pacific islands (~10%).

Where Coffee Grows Best

Coffee is cultivated across South and Central America, the West Indies, Asia, Africa, the Arabian Peninsula, the South Pacific, and Oceania. Most coffee farms sit between 300 and 400 metres above sea level, though some thrive at higher altitudes—between 2,000 and 2,500 metres. Beans grown above 1,500 metres are especially prized for their quality.

Ideal conditions include annual rainfall of 1,500–2,000 millimetres, average temperatures around 20°C, and no frost. The coffee plant is a tropical evergreen that can reach over 8 metres in the wild—but farmers prune it to about 2 metres for easier management and better bean quality.

The Three Main Coffee Species

There are three primary coffee species cultivated commercially:

• Arabica (66% of global production): Grown at higher altitudes, these beans are oval, flat-sided, and known for their complex flavours and higher quality. They’re sensitive to extreme climates.
• Robusta (Canephora): These beans are harsher, more bitter, and less acidic. They’re commonly used in instant and blended coffees, and grow well at lower altitudes with strong disease resistance.
• Liberica: Rarely exported to Japan or major consuming countries, Liberica makes up a small portion of global production and is considered inferior in cup quality.

Flat Beans vs Peaberry Beans

A typical coffee cherry holds two seeds (flat beans) that sit flat against each other. Occasionally, a cherry produces just one round seed (peaberry), which may have slightly different flavour characteristics—but taste differences are usually minimal. Most commercial coffee consists of flat beans.

From Coffee Cherry to Green Bean

A single coffee tree yields about 3–5 kilograms of cherries, resulting in roughly 0.6–1 kilogram of green (raw) beans after processing. This transformation involves multiple steps and hands along the way.

The Processing Methods: Washed vs Natural

There are two main ways to remove the coffee bean from the fruit:

• Natural (Dry) Process: Cherries are spread out to dry in the sun for 1–2 weeks until they harden and make a cracking sound. The dried fruit is then removed by machine. This method is simple but weather-dependent, and can result in beans with earthy or fermented flavours if not carefully sorted. Most Brazilian, Ethiopian, and Yemeni beans are processed this way.
• Washed (Wet) Process: Cherries are pulped to remove the skin, then fermented in water to dissolve the sticky mucilage. After washing, beans are dried on patios or raised beds. This produces cleaner, brighter beans with fewer defects. Colombia, Mexico, and Guatemala commonly use this method. However, poor fermentation can lead to off-flavours like sourness or over-fermentation.

Both methods aim to produce green beans ready for export, typically packed in sacks and shipped worldwide.

Major Coffee Varieties and Their Characteristics

Beyond species, coffee is further divided into varieties and cultivars, each with unique flavour profiles. Even within one country, elevation, soil, and climate create distinct cup qualities. That’s why it’s impossible to sum up a nation’s coffee with a single descriptor.

Why Elevation Matters

Higher-altitude farms (1,500+ metres) generally produce denser beans with more complex acidity and sweetness. Lower-altitude beans tend to be softer, less acidic, and often sweeter or simpler in profile. That’s why Ethiopia’s highland Yirgacheffe tastes floral and citrusy, while Brazil’s low-grown beans lean nutty and chocolatey.

How Coffee Reaches You

After processing, green coffee beans are carefully packed in jute or synthetic bags and loaded into shipping containers. They voyage across oceans to reach roasteries, where they’re finally roasted, ground, and brewed into your daily cup.

Frequently Asked Questions

What are the three main types of coffee beans?

The three primary coffee species are Arabica (most common, aromatic, grown at altitude), Robusta (bitter, strong, disease-resistant, lower altitude), and Liberica (rare, lower quality, seldom exported).

Where is the majority of coffee produced?

Brazil is the largest coffee producer, responsible for about 30% of global output. Central and South America together contribute around 60%, followed by Africa and Arabia (30%), and Asia and Pacific islands (10%).

What’s the difference between washed and natural coffee processing?

Washed (wet) processing removes the coffee bean’s fruit pulp via water and fermentation, yielding cleaner, brighter flavours. Natural (dry) processing dries the entire cherry in the sun before removing the bean, often resulting in fruity, earthy, or fuller-bodied profiles—but requires careful handling to avoid defects.

Does altitude affect coffee flavour?

Yes. Coffee grown at higher altitudes (typically 1,500 metres and above) tends to be denser, more acidic, and complex. Lower-altitude beans are usually sweeter, softer, and less acidic.

Are peaberry beans special?

Peaberry beans are rare single round seeds formed inside a coffee cherry instead of the usual two flat beans. They sometimes have distinct flavours, but differences are usually subtle and not always noticeable.

How many coffee beans come from one tree?

A single coffee tree produces about 3–5 kilograms of cherries, which yield roughly 0.6–1 kilogram of green coffee beans after processing.

Recommended FrontStreet Coffee Beans for Learning About Origins

Start exploring coffee origins with FrontStreet’s Ethiopia Huakui (Yirgacheffe, sundried, showcasing jasmine, berries, and tropical notes) and Gedeb (clean, juicy Ethiopian profile); Brazil Queen Manor (high-elevation Yellow Bourbon with creamy texture and notes of caramel and nuts); and PWN Golden Mandheling (ultra-clean Indonesian Mandheling with sweet, smooth body). These beans highlight how origin, processing, and variety shape flavour. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.