What Is Coffee? Key Terms Every Coffee Lover Should Know

Ever wondered what actually makes your cup of coffee taste the way it does—or why some beans cost triple others? Whether you're curious about caffeine content, why some coffee is stored in the rain, or what a 'peaberry' even means, this guide breaks down the most common 'what is' questions in specialty coffee with real numbers, processes, and global examples.

In short: Coffee is a complex drink shaped by plant variety, growing altitude, processing method, and roast level. Caffeine levels vary by drink type—tea has ~50mg per 190ml, while coffee holds ~75–239mg depending on serving and preparation. Other terms like monsooned coffee, shade-grown, and peaberry refer to specific growing, processing, or bean selection methods that change flavor, body, and availability.

What Is Caffeine?

Caffeine is a naturally occurring methylxanthine found in over 100 plants—including coffee, cola nuts, and tea leaves. It’s also added to energy drinks and cold/flu medications. Alongside caffeine, coffee and tea contain theophylline, another xanthine with weaker effects. The caffeine content depends on product type, quantity, and preparation. For example, 190ml of tea contains around 50mg of caffeine—less than one-third of the 75mg typically found in the same amount of coffee. On average, people consume about 3.98mg of caffeine per kilogram of body weight daily. For a 60kg adult, that’s roughly 239mg per day.

What Is Monsooned Coffee?

Monsooned coffee, also called Monsoon Malabar, is a unique coffee from southern India processed using traditional sun-drying and controlled moisture exposure. These beans are stored in open warehouses during the monsoon season, allowing humid winds to circulate among them. This exposure causes the beans to swell to nearly double their original size, changes their color to a dull gold, and reduces acidity while increasing body. The process takes 12 to 16 months and involves regularly turning the beans by hand or rake to ensure even moisture absorption. Beans that don’t expand fully are removed. The final product has a muted aroma initially, but once brewed, it reveals strong notes of roasted peanuts, caramel, and tobacco.

What Is Shade-Grown or Bird-Friendly Coffee?

Shade-grown coffee develops under the canopy of taller native trees, which protect the coffee plants and provide habitat for migratory birds—earning it the nickname 'bird-friendly coffee.' Traditional arabica varieties thrive in shaded environments across Mexico, Central America, Colombia, Peru, Venezuela, India, Indonesia, and parts of Africa. In contrast, some arabica is grown in full sun. Shaded coffee farms are generally more environmentally sustainable and often produce higher-quality beans, particularly in Central America, where the best flavors frequently come from shaded plots.

What Is Bourbon Coffee?

Bourbon is a natural mutation of the arabica species that originated on Île Bourbon, now known as Réunion Island. These coffee trees have been exported to Latin America and Africa, and some of the finest Latin American coffees are derived from Bourbon stock. Bourbon performs best at elevations between 1,000 and 2,000 meters, where cooler temperatures and longer maturation periods enhance its cup quality.

What Is a Peaberry Coffee Bean?

A peaberry, also called caracolillo, is a small, round coffee bean that forms when only one rounded seed develops inside the coffee cherry instead of the usual two flat-sided beans. These beans are often separated from regular beans and sold as a distinct product. Popular in Japan, peaberries are prized for their brighter acidity, intense aromatics, and unique flavor profile. They come from the same plants as regular beans but are selected for their enhanced cup characteristics.

What Is Wet-Processed Coffee?

Wet processing, or washed processing, removes the coffee fruit’s outer skin while the beans are still moist. Most high-quality, high-profile coffees are wet-processed to boost acidity and clarity. In traditional wet processing, the coffee skins are removed, and the sticky mucilage is broken down through fermentation before being washed away. Modern methods may use machines to remove the pulp and mucilage. After washing, the beans are dried with a thin layer of parchment skin still attached. This parchment is later removed before roasting. Wet processing is favored for producing bright, high-acid profiles in top-tier coffees.

What Are Hard and Soft Coffee Beans?

Hard beans are grown at higher altitudes, where cooler temperatures slow ripening and result in denser, less porous beans. These beans typically exhibit higher acidity and more complex flavors. In contrast, soft beans are grown at lower altitudes with warmer conditions, leading to faster maturation and softer, more porous beans. The distinction between hard and soft beans is commonly used in Central American coffee grading systems to indicate quality and growing elevation.

What Is Chicory Coffee?

Chicory is a perennial plant native to Europe and introduced to North America in the 1700s. While its leaves can be eaten, its roots are famously roasted, ground, and used as a coffee substitute—especially in times when coffee was scarce or expensive. Roasted chicory has no caffeine but offers a strong roasted flavor, often deeper and toastier than coffee. It’s common to find blends containing up to 30% chicory to reduce caffeine content. Other historical coffee substitutes include roasted acorns, potatoes, and local grains.

Frequently Asked Questions

How much caffeine is in tea compared to coffee?

A 190ml cup of tea contains around 50mg of caffeine, which is less than one-third the amount typically found in the same volume of coffee (about 75mg). Daily caffeine intake averages 3.98mg per kilogram of body weight—for a 60kg person, that’s approximately 239mg per day.

What is monsooned coffee and where does it come from?

Monsooned coffee, or Monsoon Malabar, is a unique coffee from southern India. It’s processed by storing beans in open warehouses during the monsoon season, exposing them to humid winds. This causes the beans to swell, lose acidity, and develop a heavy body with flavors of roasted peanuts, caramel, and tobacco. The process takes 12 to 16 months.

What makes shade-grown coffee different?

Shade-grown coffee is cultivated under the canopy of native trees, which protect the plants and provide habitats for birds—hence the term 'bird-friendly coffee.' It’s common in Central America, Mexico, South America, and parts of Africa and Asia, and is often associated with more sustainable farming and better cup quality.

What is a peaberry and why is it special?

A peaberry is a single, round coffee bean that forms when only one seed develops in the coffee cherry, instead of the usual two. These beans are usually sorted separately and are prized for their brighter acidity, intense aromas, and unique flavors. They’re especially popular in Japan.

What’s the difference between wet and dry coffee processing?

Wet processing removes the coffee cherry’s skin while the beans are still moist, often resulting in higher acidity and cleaner flavors. Dry processing, or natural processing, dries the entire cherry before removing the bean, typically producing heavier body and sweeter, fruitier notes. Wet processing is used for most high-quality, high-acid coffees.

What defines hard and soft coffee beans?

Hard beans are grown at higher altitudes with cooler temperatures, leading to slower ripening and denser beans with higher acidity and more complex flavors. Soft beans are grown at lower altitudes, ripen faster, and are generally less dense with softer flavors. This distinction is used in Central American coffee grading.

Recommended FrontStreet Beans for Exploring Coffee Origins

Explore key coffee origins and processing styles with FrontStreet Coffee’s signature beans. Try the Lintong Mandheling, a classic Indonesian offering with bold herbal notes, low acidity, and complex flavors of sandalwood, spices, toast, and caramel when roasted medium-dark. For a brighter, more balanced cup, the 2013 Yunnan Typica is a great introduction to Chinese specialty coffee, featuring nutty, chocolatey, and black tea notes thanks to its sunny, high-altitude growing conditions and medium roast. Both beans highlight how origin, elevation, and processing shape your cup. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.