How Many Coffee Bean Varieties Exist and How to Store Them

If you’ve ever wondered why some coffees wake you up better than others or why certain beans cost a small fortune, you’re not alone. Coffee drinkers often ask: What exactly do coffee beans do? How many types are there? And how should you store them to keep them fresh? This guide breaks down the essentials—from the energizing effects of coffee to the major bean varieties and best storage practices.

In short: Coffee stimulates alertness thanks to caffeine, and there are four main commercial coffee species—arabica, robusta, liberica, and excelsa—with arabica alone including hundreds of cultivars. The most famous single-origin beans include Brazil Santos, Jamaican Blue Mountain, and Brazilian varieties like Rio and Paraná. For freshness, store beans in an airtight container away from light, heat, and moisture, ideally in a cool cupboard.

What Coffee Beans Actually Do

Coffee’s primary effect is stimulation, thanks to its caffeine content. That’s why office workers and students often reach for a cup to fight fatigue. Caffeine blocks adenosine receptors in the brain, increasing alertness and focus. This functional benefit is one reason coffee remains a daily staple for millions around the world.

The Major Types of Coffee Beans

There are four main coffee species grown commercially:

• Arabica (Coffea arabica): Accounts for over 60% of global production. Known for its smooth, nuanced flavors and acidity. Includes well-known cultivars like Typica, Bourbon, and Geisha.
• Robusta (Coffea canephora): Hardier and more bitter, with twice the caffeine of arabica. Often used in espresso blends for crema and body.
• Liberica (Coffea liberica): Rare, with a woody, smoky flavor. Grown in Southeast Asia.
• Excelsa (Coffea liberica var. dewevrei): Technically a subspecies of Liberica, valued for tart, fruity complexity.

Within arabica, thousands of cultivars exist, each with unique flavor profiles influenced by terroir, processing, and roast level.

Main Coffee Bean Varieties and Their Characteristics

Here are some of the most recognized and commercially significant coffee bean types:

Brazil Santos

Santos is Brazil’s most famous coffee, named after the port of export. It is known for a mild, balanced, and neutral flavor profile. It can be brewed alone or blended into espresso mixes. Santos beans are typically medium roast and work well in both filter and espresso brewing. Quality is graded by defect count (No. 2 to No. 8), bean size (No. 13 to No. 19), and flavor (six grades).

Brazilian Rio and Paraná

These Brazilian beans are less refined in flavor but highly productive. They require minimal care, making them affordable and widely available. While their taste is considered more rustic—sometimes with rubbery or earthy notes—they are valued for consistent supply and low price.

Jamaican Blue Mountain

An icon in the specialty coffee world, Jamaican Blue Mountain is celebrated for its balance, mild acidity, and lack of bitterness. The beans are grown in the Blue Mountains of Jamaica at elevations between 910 and 1,700 meters. Production is tightly controlled, and quality is meticulously regulated. Due to limited supply and high demand—especially from Japanese buyers—it has become extremely rare and expensive. Some reports suggest it hasn’t been available in the UK for four years.

The coffee is divided into three quality tiers:

• Blue Mountain (BM): Highest grade, complex and balanced.
• High Mountain (HM): Slightly more accessible, still high quality.
• Prime Washed (PW): Most available, good value washed coffee.

Production volume ranks inversely: PW > HM > BM.

How to Properly Store Coffee Beans

To keep your coffee tasting fresh, proper storage is essential. Here’s what to do:

• Use an airtight container to limit oxygen exposure.
• Store in a cool, dark place such as a cupboard—avoid the fridge or freezer unless necessary (and only in a truly airtight bag).
• Keep beans away from light, heat, and moisture, all of which accelerate staling.
• Buy only what you’ll use in 1–2 weeks for optimal freshness, especially if grinding at home.
• For whole beans, grind just before brewing to preserve aroma and flavor compounds.

Whole bean coffee stays fresh for about 1–2 weeks after roasting when stored properly, while ground coffee begins to lose volatile aromas within minutes of grinding.

Frequently Asked Questions

What is the main effect of drinking coffee?

The primary effect of coffee is increased alertness and reduced fatigue due to its caffeine content. Caffeine works by blocking adenosine receptors in the brain, which helps you feel more awake and focused. This is why many people drink coffee at work or during long tasks.

How many types of coffee beans are there?

There are four main commercial coffee species: arabica, robusta, liberica, and excelsa. Within arabica alone, there are hundreds of cultivars. The most widely consumed and commercially important beans include Brazilian Santos, Jamaican Blue Mountain, and various Brazilian regional varieties like Rio and Paraná.

What is the most famous Brazilian coffee?

Brazil Santos is the most well-known Brazilian coffee variety. It features a mild, neutral flavor and is suitable for both single-origin brewing and blending. It’s commonly used in espresso blends and is categorized by bean size and defect grade, with quality ranging from No. 2 to No. 8 and bean size from No. 13 to No. 19.

Where does Jamaican Blue Mountain coffee come from?

Jamaican Blue Mountain coffee is grown in the Blue Mountains of Jamaica, at elevations between 910 and 1,700 meters. It is known for its balanced flavor, mild acidity, and lack of bitterness. Production is strictly limited and quality-controlled, making it rare and highly sought after, especially by Japanese buyers.

How should I store coffee beans to keep them fresh?

Store coffee beans in an airtight container in a cool, dark, and dry place. Avoid the fridge or freezer unless absolutely necessary. Keep them away from light, heat, and moisture, and try to use whole beans within 1–2 weeks of roasting for best flavor. Pre-grinding beans accelerates flavor loss, so grind just before brewing.

Recommended FrontStreet Coffee for Coffee Variety Exploration

Explore classic Brazilian profiles with FrontStreet Coffee’s Brazil Santa Inês SHB, offering a sweet, nutty profile with chocolatey undertones ideal for single-origin pour-over. For something brighter and more complex, try their Ethiopia Yirgacheffe Konga, a high-elevation washed lot with citrus and floral notes. Both showcase the diversity within arabica coffees. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.