What Is Coffeeine, Monsoon Coffee, and Other Coffee Terms Explained

You’ve sipped your way through different coffee origins, styles, and brewing methods—but some basic coffee terms still leave you guessing. What’s really in your cup when someone mentions caffeine? What does ‘monsoon coffee’ mean, and why does it taste so different? And have you ever heard of peaberry beans or why some coffee is aged for months on purpose? These aren’t just quirks of the trade—they’re real, documented processes and compounds that shape your coffee experience.

To put it simply: caffeine is a methylxanthine compound found in over 100 plants, including coffee, tea, and kola nuts. A typical 190ml cup of tea has around 50mg of caffeine—less than a third of the 75mg 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 Caffeine?

Caffeine belongs to a group of naturally occurring substances called methylxanthines. It’s found in the leaves, seeds, and fruits of more than 100 plants—including coffee, tea, and kola nuts. It’s also added to energy drinks and certain cold and flu medications. Beyond caffeine, coffee and tea contain theobromine and theophylline, other xanthine compounds with milder effects. The actual caffeine content varies depending on the product type, preparation method, and serving size.

For perspective, an average 190ml cup of tea has about 50mg of caffeine, while the same amount of coffee contains around 75mg—over 50% more. People typically take in an average of 3.98mg of caffeine per kilogram of body weight each day. That means a 60kg individual consumes roughly 239mg daily.

What Is Monsoon Coffee?

Monsoon coffee, also known as Monsooned Malabar, is a unique processed coffee from southern India. After harvest, these beans are stored in open warehouses where seasonal monsoon winds circulate among them for 12 to 16 months. This exposure causes the beans to swell to nearly double their original size, lose acidity, and develop a distinct earthy, woody profile. The process is labor-intensive, requiring workers to regularly rake and turn the beans.

The resulting coffee has low acidity and a heavy body, with flavors reminiscent of roasted peanuts, caramel, and tobacco once brewed. Though the dry scent is mild, the brewed cup reveals a complex, syrupy sweetness. The beans emerge pale gold and roughly twice their original volume, with any under-expanded beans removed before export.

What Is Shaded (or Bird-Friendly) Coffee?

Shaded coffee is grown beneath a canopy of native trees, which protect the coffee plants and provide habitat for migratory birds—earning it the nickname “bird-friendly coffee.” This traditional method is common in Central America, South America, and parts of Africa and Asia. In contrast, full-sun cultivation strips away this natural cover, often reducing biodiversity.

Coffee grown in shade tends to be more environmentally resilient and is frequently associated with higher cup quality, especially in Central American regions. The overstory trees not only shelter the coffee but also enhance soil health and reduce the need for chemical inputs.

What Is Bourbon Coffee?

Bourbon is a natural mutation of the Arabica species, first discovered on the island of Bourbon—now Réunion. It became widely cultivated in Latin America and Africa. The variety thrives at elevations between 1,000 and 2,000 meters and is known for producing sweet, balanced cups with prominent fruit and caramel characteristics. Many high-quality Latin American coffees trace their lineage to Bourbon trees.

What Is a Peaberry Coffee Bean?

A peaberry, also called caracolillo, is a rare mutation where a single rounded bean forms inside the coffee cherry instead of the usual two flat beans. These beans are often separated during sorting and sold as a distinct grade. Especially popular in Japan, peaberries are prized for their bright acidity, intense aroma, and concentrated flavor.

They come from the same plants as regular beans but are selected for their small, round shape and typically offer a more vibrant cup profile. Their unique formation is thought to contribute to a more efficient development of flavors within the single bean.

What Is Washed (Wet) Coffee Processing?

Washed or wet processing involves removing the coffee cherry’s outer skin and pulp while the beans are still moist. This method enhances clarity and acidity, and is used for many of the world’s most celebrated coffees. Traditionally, enzymes break down the sticky mucilage layer in fermentation tanks before the beans are washed clean. Modern mills may use mechanical mucilage removers instead.

After washing, the beans are dried with a protective parchment layer still intact. This “parchment coffee” is traded and stored before being hulled—removing the parchment—just before roasting or export.

What Is Hard Bean vs. Soft Bean Coffee?

Hard bean (HB) coffee is grown at higher altitudes, typically above 1,200 meters, where cooler temperatures slow ripening and produce denser, harder beans. In contrast, soft bean coffee is grown at lower elevations, resulting in softer, less dense beans that usually have milder flavor profiles. Hard beans are generally associated with higher acidity and more complex flavors, though exceptions exist. This classification is especially used in grading Central American coffees.

What Is Chicory Coffee?

Chicory is a perennial plant native to Europe, introduced to North America in the 1700s. While its leaves can be eaten, its roots are roasted, ground, and used as a coffee substitute. Historically, chicory was widely adopted in times of coffee scarcity or high prices. It contains no caffeine but offers a strong roasted flavor, often blended into coffee at levels up to 30% to reduce caffeine content or alter taste.

Other substitutes include roasted acorns and potatoes, though none replicate coffee’s full complexity. Chicory adds a bold, bitter edge and was especially popular in New Orleans-style blends.

What Is Aged Coffee?

Historically, aged coffee refers to beans that underwent long sea voyages in hot, humid conditions, altering their flavor profile over months. Today, some producers intentionally age coffee in controlled warehouse environments for several years. This reduces acidity and increases body, extending shelf life compared to fresh or young crop coffees.

Indonesian coffees, such as those affected by Monsoon conditions, are often exposed to humid, salty air to accelerate the aging process deliberately—enhancing their signature earthy, musty qualities. This contrasts with fresh crop profiles, which highlight bright, high-acid notes.

What Is Salt Coffee?

Salt coffee involves adding 1/4 to 1/6 of a teaspoon of natural salt per cup, along with compounds that support gut health. Advocates claim it improves digestion, balances gut flora, and enhances metabolism. The salt contributes minerals like potassium and magnesium, while the coffee provides caffeine for stimulation and antioxidants like chlorogenic acid, said to benefit skin health.

Japanese doctor Shinya Takahashi promotes gut health through diet, noting that poor intestinal balance can overburden the liver and immune system. The idea is that salt coffee may aid digestion and detoxification via improved enzyme function and mineral balance.

Recommended FrontStreet Beans for Exploring Coffee Processing

Try FrontStreet Coffee’s Lintong Mandheling, a classic Indonesian offering with herbal depth and notes of spice, toast, and caramel when roasted medium-dark—perfect for exploring monsooned-style profiles. For a brighter, more balanced cup, their 2013 Yunnan Typica is a great introduction to naturally sweet, chocolatey Asian coffee with nut and tea notes, roasted to medium. Both beans highlight different sides of specialty coffee processing traditions and are excellent for cupping or filter brewing. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.