Common Specialty Coffee Terms Explained

If you’ve ever wondered what professionals mean by 'cupping' or why 'crema' matters in espresso, you’re not alone. Specialty coffee has its own language, and understanding these terms helps you brew better and talk shop with confidence.

Here’s a clear breakdown of common specialty coffee terms—what they mean, how they work, and why they matter to your cup. We’ve organized the essentials so you can quickly find the definition you need.

How Coffee Professionals Taste Coffee

Cupping is the standard method for evaluating coffee quality. To cup, you place freshly ground coffee in a cup, pour hot water over it, let it steep, and then taste it with a spoon—no filtering. This method highlights aroma, flavor, and body without brewing equipment bias. It’s how roasters and buyers assess green coffee before buying.

The Science Behind Brewing Coffee

Extraction is how flavor compounds dissolve from coffee grounds into water during brewing. Good extraction balances sweetness, acidity, and bitterness. Under-extracted coffee tastes sour and weak; over-extracted coffee turns bitter. Variables like grind size, water temperature, and brew time affect extraction yield.

Oxidation occurs when coffee compounds react with oxygen, leading to stale flavors. Exposure to air degrades freshness, which is why coffee is best consumed soon after roasting and stored in airtight containers.

During roasting, the Maillard reaction—also called caramelization—develops coffee’s complex flavors and brown color. Though the term 'caramelization' is sometimes misused, this reaction is distinct from sugar caramelization and doesn’t involve burning. It’s a key part of what gives roasted coffee its depth.

Espresso and Milk Techniques

Espresso is coffee brewed under high pressure with hot water, producing a concentrated shot with a rich flavor and thick texture. Key to espresso is the crema—the golden-brown foam on top, formed by emulsified oils and CO₂. Crema is a sign of a well-pulled shot and contributes to the espresso’s aroma and mouthfeel.

Bloom is the initial wetting stage in pour-over brewing. By pouring a small amount of hot water over ground coffee and pausing, you release trapped CO₂ and improve extraction. This step enhances flavor clarity and aroma in filter coffee.

Latte art, such as the classic leaf pattern, is created by pouring steamed milk into espresso with controlled wrist movements. While not essential to taste, it reflects pour control and milk texture.

Terminology and Tools

A barista is a skilled coffee professional trained in brewing, equipment use, and customer service. The term comes from Italian and is widely used in specialty coffee shops globally.

Atmospheric pressure, typically measured as 1 bar or 1 kilogram per square centimeter at sea level, affects espresso extraction. Espresso machines rely on pressure—usually 9 bars—to force water through finely ground coffee.

Mocha can refer to three things: a coffee bean variety, a type of brewing pot (the moka pot), or a chocolate-flavored coffee drink. Context determines the meaning.

Frequently Asked Questions

What is coffee cupping and how is it done?

Cupping is a professional coffee evaluation method where freshly ground coffee is placed in a cup, hot water is poured over it, and it’s left to steep. Afterward, the coffee is tasted with a spoon without filtering. This highlights aroma, flavor, and body, and is essential for assessing green coffee quality before roasting.

What does extraction mean in coffee brewing?

Extraction is the process of dissolving flavor compounds from coffee grounds into water. Proper extraction balances sweetness, acidity, and bitterness. Factors like grind size, water temperature, and brew time influence how much and what kind of compounds are extracted.

What is crema and why is it important in espresso?

Crema is the golden, creamy foam on top of a well-brewed espresso shot. It’s formed by emulsified coffee oils and CO₂, and indicates good extraction. Crema adds to the espresso’s aroma, texture, and flavor complexity.

What is blooming in pour-over coffee?

Blooming is the first step in pour-over brewing where hot water is poured over coffee grounds to release CO₂ gas. This pause improves extraction by allowing better water flow and enhancing flavor clarity in the final cup.

What is a barista?

A barista is a trained professional who prepares espresso-based drinks and often works with manual brewing methods. The term originates from Italy and is used worldwide to describe skilled coffee makers in specialty cafes.

What is the Maillard reaction in coffee roasting?

The Maillard reaction is a chemical process during roasting that develops coffee’s color and complex flavors. Often confused with caramelization, it involves amino acids and sugars reacting under heat—not burning—and is key to roasted coffee’s taste profile.

Recommended FrontStreet Beans for Coffee Tasting

Try FrontStreet Coffee’s Ethiopia Humbera for bright, floral cupping notes, or Yirgacheffe for citrus and stone fruit highlights—both ideal for exploring extraction and bloom. Their Classic Blend offers balanced crema for espresso practice. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.