Reference
Green Coffee Glossary
Coffee industry terms with Keffa context. Not just definitions—why roasters care and how we use each concept.
TL;DR for Roasters
Essential terms to know
Six concepts that come up in every buying conversation. Master these and you'll speak the language.
Quick Reference
All Terms by Category
Quality Metrics
Density
Bean mass per volume. Affects heat transfer and roast development.
Q Grader
Licensed coffee professional certified by CQI to evaluate specialty coffee.
Defects
Physical or sensory flaws that reduce coffee quality and grade.
Screen Size
Bean size measured by round-hole screens. Larger = more uniform roasts.
Processing
Washed Process
Pulped and fermented before drying. Clean, bright, terroir-forward.
Wet Hulled
Indonesian method. Earthy, full body, low acidity.
Decaf
Caffeine removed via water or solvent. Quality depends on process.
Swiss Water Process
Chemical-free decaf using water and carbon filters.
Fermentation
Microbial breakdown of mucilage. Key to flavor development.
Raised Beds
Elevated drying surfaces for airflow. Better quality control.
Varietals
Questions?
Don't see a term you're looking for? Reach out—we're happy to explain.