Coffee Knowledge
Latest articles, industry insights and brewing guides
The Three Levels of Coffee Roasting Mastery
Learn how coffee roasting skill divides into three clear tiers—from basic commercial viability to artistic expression.
How CoE and WBC Cupping Scores Work: Scoring Coffee Like a Pro
Learn how CoE and WBC cupping scores evaluate coffee, from aroma to aftertaste, and what 80+ points really means.
How the E61 Group Head Works in Commercial Espresso Machines
Learn why the E61 group head remains a classic in commercial espresso machines, with its heat exchange and pre-infusion design explained.
Why You Should Avoid Using Boiler Water from Your Espresso Machine
Avoid using water from your espresso machine’s boiler—it’s often over-boiled and can damage your machine and health. Here’s why.
Anatomy of a Coffee Cherry: Bean Structure & Composition
Discover the internal structure of a coffee cherry, what’s inside a green coffee bean, and which compounds affect flavor and nutrition.
How to Identify and Grade Specialty Coffee Beans
Learn how to assess coffee bean quality using export details, appearance, and grading systems from major producing countries.
Three Main Coffee Roaster Types: Hot Air, Direct Fire, and Hybrid
Learn how hot air, direct fire, and half-direct/half-hot-air roasters affect flavor, efficiency, and roast development in specialty coffee.
How to Blend Single-Origin Coffee for Espresso Blends
Explore three tested espresso blend recipes using Brazilian, Colombian, Kenyan, and Harar beans, with ratios, roast levels, and flavor profiles.
How Grind Size Affects Espresso Extraction and Flavor
Espresso requires a fine, precise grind—changes as small as 0.1 affect extraction time, flow rate, and taste. Here’s why grind size matters.
How to Adjust Espresso Tamping Based on Grind, Dose & Roast
Learn how grind size, dose, and roast level affect espresso tamping pressure, extraction time, and crema quality in daily barista practice.
How to Bloom Coffee Properly in Pour-Over Brewing
Learn the key factors for effective coffee blooming: water temp, volume, timing, and technique to boost extraction and flavor.
How Bloom and Pre-Infusion Affect Pour-Over and Espresso Extraction
Learn how proper bloom and pre-infusion techniques improve coffee flavor by creating even extraction and avoiding over-extraction.
How Coffee Leaf Rust Damages Coffee Quality and How to Prevent It
Learn how coffee leaf rust devastates yields and quality, why shade loss worsens outbreaks, and what farmers can do to protect crops.
How to Use an AeroPress: Brewing Methods & Reverse Technique
Learn how to brew coffee with an AeroPress in under 30 seconds, including step-by-step instructions and the difference between standard and reverse methods.
Colombian Geisha Cupping: Flavor Profile & Tasting Notes
A deep dive into Colombian-grown Geisha coffee, with cupping results showing its bright acidity, floral-fruity profile, and surprising roast consistency.
How Coffee Roaster Afterburners Reduce VOC Emissions
A coffee roaster’s afterburner burns off smoke and VOCs at around 500°C, cutting emissions but tripling gas use. Here’s how it works.
How Coffee Roasting Transforms Green Beans Into Flavor
Learn how roasting turns flavorless green coffee beans into aromatic, complex brews through heat, time, and chemical change.
What Is Single Origin Coffee? How to Taste It Right
Single origin coffee highlights unique regional flavors without milk or sugar. Learn how to define, evaluate, and enjoy these distinctive beans.
How to Store Green Coffee Beans in a Warehouse
Keep green coffee fresh by storing it dry, cool, dark, and in breathable sacks. Avoid moisture, heat, and sunlight to preserve flavor potential.
Espresso vs Americano: Key Differences Explained
Learn how espresso and Americano differ in brewing method, pressure, strength, and flavor. Plus, which coffee maker to choose.