Start Here
A calm doorway into the project.
Coffee | One Roast at a Time follows coffee from the living seed through processing, roasting and the cup — combining published research, recorded experience and practical learning in plain English.
What this is
This is an independent coffee learning project shaped by home roasting, careful observation and a growing curiosity about everything that happens before the roaster.
Where published research is discussed, the aim is to separate what is established, what the evidence suggests and what remains an open question. Personal experience is presented as experience, not as a universal rule.
Choose your path
I want to understand coffee
Follow the coffee fruit and seed through microbes, fermentation, processing, chemistry, species and climate.
I own a Gene Café CBR-301
Start with the free Owner’s Field Guide and the practical machine reference built from official guidance, direct observation and more than 160 roasts.
I want to follow the roasting journey
Explore what the Gene Café taught me and follow the next chapter as the project moves toward the Kaleido M2 and Artisan.
I want the roast records
Browse the working archive of individual roasts, comparisons, machine changes, failures, recoveries and cup observations.
I need a useful resource
Find the free Gene Café Field Guide, Coffee Water Calculator and a smaller collection of practical or experimental references.
I prefer video
Watch roasts, machine walkthroughs, coffee experiments and project updates from the Coffee | One Roast at a Time channel.
A useful first reading path
- Understanding Coffee — begin with the fruit, seed and the questions behind the cup.
- Coffee Processing Explorer — follow what changes between harvest and green coffee.
- Gene Café CBR-301 Owner’s Field Guide — the practical legacy guide for owners.
- Roasting — explore the Gene Café archive and the emerging Kaleido M2 chapter.
- Method and Assumptions — see how observation, interpretation and evidence are kept separate.
How to read the project
Observation first, interpretation second.
Some pages are grounded mainly in published research. Some come from recorded roast experience. Some connect the two. The aim is to make that boundary visible, especially when a graph or measurement looks more certain than it really is.