Green Coffee Beans
Unroasted coffee in its raw, stable state - the input to every roast.
Overview
Green coffee behaves like a moisture-bearing agricultural product, because that is exactly what it is. Density, moisture content, bean size and processing method all vary by origin and lot, and every one of those variables changes how the same profile plays out in the drum.
Using it well
- Record the lot, arrival date and moisture reading for every bag. Two years from now that log is the reason you can repeat a great roast.
- Denser, higher-grown beans generally tolerate a faster early roast and a higher charge temperature.
- Natural-processed beans often roast faster toward the end. Expect a more volatile finish.
Not intended for eating raw. Keep green coffee away from food-preparation surfaces and out of reach of children and pets.
Why this matters
The green coffee beans sits in the charging stage of a roast. Getting it right removes one source of variation, which matters because roasting rewards consistency more than any single clever adjustment. Change one variable at a time, record what you did, and compare batches rather than judging any single roast in isolation.
If you are building a complete setup, start with the instruments that measure what is happening - a probe, a scale and a logger - before buying anything that promises a better result by itself. Measurement first, equipment second.
Educational content. Roast Lab does not sell this or any other product, and we do not accept payment for coverage. Specifications listed above describe typical ranges for the category rather than any specific model, and vary between manufacturers. Always follow the manufacturer instructions and safety documentation supplied with your equipment.
Related tools
Storage Bin
An airtight container that holds a working supply of green coffee at stable humidity.
One-Way Valve Bag
A barrier bag with a one-way degassing valve, used for both green and roasted coffee.
Humidity Control Pack
A two-way humidity regulator that holds a container at a target relative humidity.
Precision Scale
A scale accurate to 0.1 g for charge weights, yield checks and roast loss measurement.