Coffee Knowledge
Latest articles, industry insights and brewing guides
Al’s Rule: The Espresso Sweet Spot Formula
Discover Al Critzer’s classic espresso guideline: 30ml in 30 seconds, adjust time ±1 sec per 5ml change in yield to hit the sweet spot.
What Is Lungo Coffee? How It Differs From Americano
Lungo is a long espresso shot extracted with more water, yielding 50–60ml. It’s stronger than Americano but less intense than straight espresso.
The Handmade Dutch Espresso Machine Called Speedster
Dutch builders crafted the Speedster from La Marzocco GS brew heads, creating just six prototypes by 2001 — all snapped up by coffee lovers.
Why Fresh Roast Matters: Small-Scale Coffee Roasting Explained
Freshly roasted coffee peaks in flavor just after a week—but loses aroma within 15 days. Here’s why small-batch roasting delivers the best cup.
What Makes Arabica Coffee Different from Other Species
Arabica coffee thrives at high altitudes, grows slowly, and offers complex flavors — but it’s much harder to cultivate than Robusta. Here’s why.
How to Make Japan’s 2003 Winning Summer Coffee: Summer Vision
Discover the 2003 Japanese Barista Championship-winning 'Summer Vision' coffee recipe, blending espresso, spuma, and cream for a refreshing summer drink.
14 Classic Coffee Recipes Every Coffee Lover Should Know
Learn how to make 14 classic coffee drinks including Irish Coffee, Café au Lait, and more, with exact ratios, techniques, and serving tips.
How Much Real Jamaican Blue Mountain Coffee Comes to China?
Few true Blue Mountain beans reach China due to limited production and high demand abroad. Here's the reality behind the rare import.
How Chongqing Roasters Share Coffee Bean Data With Baristas
Chongqing roasters provide key details on origin, roast, and processing to help baristas understand and explain each coffee. This info aids brewing and customer conversations.
How Roasters Explain Italian Espresso Flavors to Baristas
Learn how roasters describe espresso flavor profiles — from aromas and sweetness to aftertaste — with sensory details used in training.
Complete Guide to Popular Coffee Bean Varieties
Explore 8 classic coffee bean types, from Jamaica Blue Mountain to Brazilian Santos, with roast levels, flavor profiles, and buying tips.
How to Grow Strong Coffee Seedlings: Step-by-Step
Learn how to prepare nursery soil, build shade structures, and plant high-quality coffee seedlings with exact pH, spacing, and fertilizer ratios.
How to Make a Perfect Espresso Shot
Learn the key factors for brewing excellent espresso: machine specs, bean choice, grind, and temperature control for balanced extraction.
How to Use a Siphon Pot to Brew Single-Origin Coffee
Learn the step-by-step process for using a siphon pot—also called a vacuum pot—to brew clean, aromatic single-origin coffee at home.
Complete Guide to Iced Coffee Cocktails & Drinks
Explore 20 classic iced coffee recipes with exact ratios, methods, and ingredients—from Café Freddo to Café Glacé.
What Makes Jamaican Blue Mountain Coffee So Special?
Learn why Jamaica Blue Mountain coffee is globally revered—from its strict quality controls to its unique mountain terroir.
How to Make Traditional Irish Coffee at Home
Learn how to craft authentic Irish coffee with the right proportions, tools, and technique—just like the original Dublin bartender did.
Main Coffee Varieties: Arabica vs Robusta
There are over 60 coffee species, but just two dominate global production: Arabica (70%) and Robusta (30%). Here's what sets them apart.
How to Use a Siphon Coffee Maker Step by Step
Learn how to brew with a siphon coffee maker using exact temperatures, ratios, and timings for clean, vibrant extractions every time.
How to Read Coffee Grounds: Greek & Turkish Coffee Divination Guide
Learn the traditional steps and symbols of Greek and Turkish coffee divination, including how to interpret leftover grounds and make a wish with spilled water.