Retention sampling and archives
How to establish retention sampling and archive systems for green, roasted, and brewed coffee to support quality control, traceability, and dispute resolution.
Brewed coffee
Early Coffee Brewing Tools: Cloth Filters, Simple Pots & Ancient Techniques
Discover pre-industrial coffee brewing methods including cloth filter coffee, simple pot brewing, and direct immersion techniques. Learn how ancient coffee preparation tools laid the foundation for modern brewing innovations.
Cupping schedule and calibration
How to design a cupping schedule for ongoing quality checks and how to run calibration sessions to align tasters’ sensory evaluations.
Alignment checks and shimming
How to perform alignment checks on coffee grinder burrs and use shimming to correct misalignment for optimal grind consistency.
Bypass percentages and dilution math
How to calculate and apply bypass water (dilution) in coffee brewing, and how bypass percentages affect strength and extraction perception.
Common faults: scorching and bitterness
The common faults in ibrik and Moka pot brewing that lead to scorching and bitterness, and how to prevent them.